number

ten

ten [number]

The number 10

US /ten/ 
UK /ten/ 

(عدد) ده

مثال: 

Her father died ten years ago.

Oxford Essential Dictionary

ten

 number
10

Longman Dictionary of Contemporary English

ten

ten /ten/ BrE AmE number, noun
[Language: Old English; Origin: tien]
1. the number 10:
Snow had been falling steadily for ten days.
I need to be home by ten (=ten o'clock).
At the time, she was about ten (=ten years old).
2. ten to one informal used to say that something is very likely:
Ten to one he’ll have forgotten all about it tomorrow.
3. be ten a penny British English informal to be very common and therefore not special or unusual ⇨ be a dime a dozen at ↑dime(2)
4. (get) ten out of ten (for something) British English used in schools to give a perfect mark, or humorously to praise someone:
You get ten out of ten for effort, Simon.
5. [countable] a piece of paper money that is worth ten dollars or ten pounds:
I reached inside my purse and handed him a ten.
 

Oxford Advanced Learner's Dictionary

ten

ten [ten tens]   [ten]    [ten]  number
10  There are examples of how to use numbers at the entry for five.
Idioms: ten out of ten  ten to one  
Word Origin:

Old English tēn, tīen, of Germanic origin; related to Dutch tien and German zehn, from an Indo-European root shared by Sanskrit daśa, Greek deka, and Latin decem.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

ten / ten / number

A1 the number 10:

Her father died ten years ago.

We can take ten (people) in the minibus.

Collins COBUILD Advanced Learner’s English Dictionary

ten

[te̱n]
 
 tens
 NUM

 Ten is the number 10.
 → See also Number Ten
 ten a pennysee penny
  Over the past ten years things have changed.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

ten

ten /ˈtɛn/ noun, pl tens
1 [count] : the number 10
2 [count] : the tenth in a set or series
• the ten of spades
• page ten
3 [noncount] : ten o'clock
• “What time is it” “It's ten.”
4 [count]
a US : a ten-dollar bill
• The total cost was $7.83 and she gave him a ten.
• Do you have any fives or tens?
b Brit : a ten-pound note
5 [singular]
a : something that is the best
• The food at the restaurant is a (perfect) ten.
b : a very attractive person
• She's a ten.
ten a penny Brit informal : very common
• Thrillers are ten a penny [=(US) a dime a dozen] these days.
ten out of ten
- used to say that something was done very well
• I'll give them ten out of ten for creativity.
ten to one informal : very likely
Ten to one they'll lose. [=I think they'll almost certainly lose]
- ten adj
ten cars/guests/choices
- ten pronoun
Ten (of them) passed the test.

nine

nine [number]

The number 9

US /naɪn/ 
UK /naɪn/ 

(عدد) نه

مثال: 

A nine-month prison sentenc

Oxford Essential Dictionary

nine

 number
9

>> ninth pronoun, adjective, adverb 9th

Longman Dictionary of Contemporary English

nine

nine /naɪn/ BrE AmE number
[Language: Old English; Origin: nigon]
1. the number 9:
He’s only been in this job for nine months.
We open at nine (=nine o'clock).
Kay was taught by her mother till she was nine (=nine years old).
2. nine times out of ten almost always:
Nine times out of ten we can solve the problem over the phone.
3. a nine days’ wonder a thing or event that makes people very excited for a short time
4. have nine lives to make lucky escapes from dangerous situations
dressed up to the nines at ↑dressed(4), ⇨ be on cloud nine at ↑cloud1(5)

Oxford Advanced Learner's Dictionary

nine

nine [nine nines]   [naɪn]    [naɪn]  number
9  There are examples of how to use numbers at the entry for five.
more at dressed (up) to the nines at  dressed, possession is nine points/tenths/parts of the law at  possession
Idioms: have nine lives  nine days' wonder  nine times out of ten  nine to five  whole nine yards  
Word Origin:

Old English nigon, of Germanic origin; related to Dutch negen and German neun, from an Indo-European root shared by Sanskrit nava, Latin novem, and Greek ennea.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

nine / naɪn / number

A1 the number 9:

The children go to bed at nine (o'clock).

a nine-month prison sentence

nine to five describing or relating to work that begins at nine o'clock in the morning and finishes at five, the hours worked in many offices from Monday to Friday:

a nine-to-five routine

She's tired of working nine to five.

Collins COBUILD Advanced Learner’s English Dictionary

nine

[na͟ɪn]
 
 nines

 1) NUM Nine is the number 9.
  We still sighted nine yachts.
  ...nine hundred pounds.
 2) PHRASE If you say that someone is dressed up to the nines or dressed to the nines, you mean that they are wearing very smart or elegant clothes. [INFORMAL]
 nine times out of tensee time

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

nine

nine /ˈnaɪn/ noun, pl nines
1 [count] : the number 9
2 [count] : the ninth in a set or series
• The next card was the nine of diamonds.
• She wears a size nine.
3 [noncount] : nine o'clock
• “What time is it?” “It's nine.”
• He woke up at nine this morning.
• a nine-to-five job [=a job that you work during regular business hours usually in an office]
4 [count] : the first or last nine holes of an 18-hole golf course - usually singular
• She didn't play well on the front nine [=on holes 1 through 9], but she was one under par on the back nine. [=on holes 10 through 18]
on cloud nine
- see 1cloud
the whole nine yards
- see 2yard
to the nines : in a very fancy or impressive way
• He was dressed to the nines.
- nine adj
• It took us nine hours to get there.
- nine pronoun
• I would like nine (of them), please.
Nine out of 10 [=90 percent of] doctors agree that this treatment works.

eight

eight [number]

The number 8

US /eɪt/ 
UK /eɪt/ 

هشت

مثال: 

She was eight (years old) when her family moved here.

Oxford Essential Dictionary

eight

 number
8

Longman Dictionary of Contemporary English

eight

eight /eɪt/ BrE AmE number, noun
[Language: Old English; Origin: eahta]
1. the number 8:
It’s only eight days till Christmas.
They woke at eight (=eight o'clock).
My parents died when I was eight (=eight years old).
2. [countable] a team of eight people who row a racing boat, or the boat that they row
 

Oxford Advanced Learner's Dictionary

eight

eight [eight eights]   [eɪt]  ;   [eɪt] 

1. number 8  There are examples of how to use numbers at the entry for five.

2. noun a team of eight people who row a long narrow boat in races; the boat they row

see also  figure of eight

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

eight / eɪt / number

A1 the number 8:

She was eight (years old) when her family moved here.

We've got eight people coming to dinner.

Collins COBUILD Advanced Learner’s English Dictionary

eight

[e͟ɪt]
 
 eights
 NUM

 Eight is the number 8.
  So far eight workers have been killed.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

eight

eight /ˈeɪt/ noun, pl eights
1 [count] : the number 8
2 [count] : the eighth in a set or series
• the eight of hearts
3 [noncount] : eight o'clock
• Dinner is at eight.
• He's working until eight.
- eight adj
eight cars
- eight pronoun
Eight (of them) passed the test.

seven

seven [number]

The number 7

US /ˈsev.ən/ 
UK /ˈsev.ən/ 

هفت

مثال: 

The restaurant opens for dinner at seven (o'clock).

Oxford Essential Dictionary

seven

 number
7

Longman Dictionary of Contemporary English

seven

seven /ˈsevən/ BrE AmE number
[Language: Old English; Origin: seofon]
1. the number 7:
The women visited cities in seven states.
We close the store at seven (=seven o'clock).
‘How old’s Sam?’ ‘He’s seven (=seven years old).’
2. the seven year itch the idea that after seven years of being married, many people start to want a relationship with someone new – used humorously
at sixes and sevens at ↑six(3)

Oxford Advanced Learner's Dictionary

seven

seven [seven sevens]   [ˈsevn]    [ˈsevn]  number
7  There are examples of how to use numbers at the entry for five.
more at at sixes and sevens at  six
Idiom: seven-year itch  
Word Origin:

Old English seofon, of Germanic origin; related to Dutch zeven and German sieben, from an Indo-European root shared by Latin septem and Greek hepta.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

seven / ˈsev. ə n / number

A1 the number 7:

The restaurant opens for dinner at seven (o'clock).

We're open seven days a week (= every day) .

Collins COBUILD Advanced Learner’s English Dictionary

seven

[se̱v(ə)n]
 
 sevens
 NUM

 Seven is the number 7.
  Sarah and Ella have been friends for seven years.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

seven

sev·en /ˈsɛvən/ noun, pl -ens
1 [count] : the number 7
2 [count] : the seventh in a set or series
• the seven of hearts
3 [noncount] : seven o'clock
• “What time is it?” “It's seven.”
• I leave each day at seven.
at sixes and sevens
- see six
- seven adj
• waiting for seven hours
- seven pronoun
Seven (of them) passed the test.

six

six [number]

The number 6

US /sɪks/ 
UK /sɪks/ 

(عدد) شش

مثال: 

Look for a bus with a number six on the front of it.

Oxford Essential Dictionary

six

 number (plural sixes)
6

Longman Dictionary of Contemporary English

six

six /sɪks/ BrE AmE number
[Language: Old English]
1. the number 6:
six months ago
She arrived just after six (=six o'clock).
He learnt to play the violin when he was six (=six years old).
2. six figures/digits used to talk about a number that is between 100,000 and 1,000,000:
The final cost of the project will easily run into six figures (=be over £100,000 or $100,000).
3. at sixes and sevens informal disorganized and confused:
When the visitors arrived, we were still at sixes and sevens.
4. it’s six of one and half a dozen of the other spoken used to say that both people or groups who are involved in a situation are equally responsible for something bad that happens:
In any family quarrel, it’s usually six of one and half a dozen of the other.
5. knock/hit somebody for six British English spoken to affect someone strongly in a bad way:
Losing his job really knocked him for six.
6. [countable] a hit in ↑cricket that scores six ↑runs because the ball crosses the edge of the playing area before touching the ground

Oxford Advanced Learner's Dictionary

six

six [six sixes]   [sɪks]    [sɪks]  number
6  There are examples of how to use numbers at the entry for five.
Idioms: at sixes and sevens  hit somebody for six  it's six of one and half a dozen of the other  six feet under  
Word Origin:

Old English siex, six, syx, of Germanic origin; related to Dutch zes and German sechs, from an Indo-European root shared by Latin sex and Greek hex.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

six / sɪks / number

A1 the number 6:

Look for a bus with a number six on the front of it.

"How many grandchildren do you have now?" "I've got six."

Collins COBUILD Advanced Learner’s English Dictionary

six

[sɪ̱ks]
 
 sixes

 1) NUM Six is the number 6.
  ...a glorious career spanning more than six decades.
 2) N-COUNT: usu sing In cricket, if a player hits a six, they score six runs by hitting the ball so that it crosses the boundary at the edge of the playing area before it touches the ground.
 3) PHRASE: V inflects If someone or something is hit for six or knocked for six, they are very upset or badly affected by an experience or piece of news. [BRIT, INFORMAL]
  The loss of my wife hit me for six; it took me months to recover...
  Many areas in the North were knocked for six by that first recession.
 4) PHRASE: usu v-link PHR If you say that someone or something is at sixes and sevens, you mean that they are confused or disorganized. [INFORMAL]
  The government is at sixes and sevens over the issue of domestic security.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

six

six /ˈsɪks/ noun, pl sixes
1 [count] : the number 6
2 [count] : the sixth in a set or series
• the six of hearts
3 [noncount] : six o'clock
• “What time is it?” “It's six.”
• I leave each day at six.
at sixes and sevens chiefly Brit informal : disorganized and confused
• The change left everyone at sixes and sevens.
• Everything will be at sixes and sevens until our computer system is fixed.
hit/knock (someone) for six Brit informal : to have an unpleasant and shocking effect on (someone)
• The news of the accident really hit me for six.
six of one, half (a) dozen of the other US or chiefly Brit six of one and half a dozen of the other informal
- used to say that you do not see any real difference between two possible choices
• “Which do you prefer?” “I don't care; it's six of one, half a dozen of the other.”
- six adj
six possibilities/hours
- six pronoun
Six (of them) will be coming tonight.

five

five [number]

The number 5

US /faɪv/ 
UK /faɪv/ 

پنج

مثال: 

I work five days a week.

Oxford Essential Dictionary

five

 number
5

Longman Dictionary of Contemporary English

five

five /faɪv/ BrE AmE number, noun
[Language: Old English; Origin: fif]
1. the number 5:
There is also a golf course five miles away.
I’ll be back by five (=five o'clock).
The family moved to Canada when he was five (=five years old).
2. [countable] a piece of paper money that is worth five dollars or five pounds ⇨ fiver:
Do you have two fives for a ten?
3. give somebody (a) five informal to hit the inside of someone’s hand with your hand to show that you are very pleased about something
4. take five spoken used to tell people to stop working for a few minutes
5. fives [uncountable] a British ball game in which the ball is hit with the hand against any of three walls ⇨ handball
⇨ ↑high five, ↑nine to five
 

Oxford Advanced Learner's Dictionary

five

five [five fives]   [faɪv]    [faɪv]  number
5
There are only five cookies left.
five of Sweden's top financial experts
Ten people were invited but only five turned up.
Do you have change for five dollars?
a five-month contract
Look at page five.
Five and four is nine.
Three fives are fifteen.
I can't read your writing— is this meant to be a five?
The bulbs are planted in threes or fives (= groups of three or five).
We moved to America when I was five (= five years old).
Shall we meet at five (= at five o'clock), then?
see also  high five
more at nine to five at  nine
Idiom: give somebody five  
Word Origin:

Old English fīf, of Germanic origin; related to Dutch vijf and German fünf, from an Indo-European root shared by Latin quinque and Greek pente.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

five / faɪv / number

A1 the number 5:

Five, four, three, two, one, blast-off!

I work five days a week.

 

→  See also high five

Collins COBUILD Advanced Learner’s English Dictionary

five

[fa͟ɪv]
 
 fives

 1) NUM Five is the number 5.
 2) N-UNCOUNT Fives is a British ball game in which you hit a small hard ball with a glove or bat against three walls of a court.
 3) → See also high five

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

five

five /ˈfaɪv/ noun, pl fives
1 [count] : the number 5
2 [count] : the fifth in a set or series
• the five of clubs
• page five
3 [noncount] : five o'clock
• I get off work at five.
• The store is open until five.
4 [count]
a US : a five-dollar bill
• The total cost was $3.83 and she gave him a five.
b Brit : a five-pound note : fiver
- five adj
five years
- five pronoun
Five (of them) are missing.

four

four [number]

The number 4

US /fɔːr/ 
UK /fɔːr/ 

چهار

مثال: 

Most animals have four legs.

Oxford Essential Dictionary

four

 number
4

on all fours with your hands and knees on the ground:
We went through the tunnel on all fours.

>> fourth pronoun, adjective, adverb 4th

Longman Dictionary of Contemporary English

four

four /fɔː $ fɔːr/ BrE AmE number, noun
[Language: Old English; Origin: feower]
1. the number 4:
She is married with four children.
They arrived just after four (=four o'clock).
Luke will soon be four (=four years old).
2. on all fours supporting your body with your hands and knees:
He was down on all fours playing with the puppy.
3. in fours in groups of four people or things:
The boxes were stacked in fours. ⇨ ↑foursome
4. [countable] a hit in ↑cricket that scores four ↑runs because it goes over the edge of the playing area
5. [countable] a team of four people who row a racing boat, or the boat that they row
6. the four corners of the Earth/world literary places or countries that are very far away from each other:
People from the four corners of the world have come to Ontario to make it their home.

Oxford Advanced Learner's Dictionary

four

four [four fours]   [fɔː(r)]  ;   [fɔːr] 

1. number 4  There are examples of how to use numbers at the entry for five.

2. noun a group of four people or things
to make up a four at tennis

a coach and four (= four horses)

3. noun (in cricket) a shot that scores four runs

4. noun a team of four people who row a long narrow boat in races; the boat that they row 

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

four / fɔː r /   / fɔːr / number

A1 the number 4:

Most animals have four legs.

Their little girl is nearly four.

Collins COBUILD Advanced Learner’s English Dictionary

four

[fɔ͟ː(r)]
 
 fours

 1) NUM Four is the number 4.
  Judith is married with four children.
 2) N-COUNT In cricket, if a player hits a four, they score four runs by hitting the ball along the ground so that it crosses the boundary at the edge of the playing area.
  Taylor hit 13 fours and batted for 140 minutes.
 3) N-COUNT A four is a narrow racing boat that is rowed by a team of four people.
 4) PHRASE: PHR after v, v-link PHR If you are on all fours, your knees, feet, and hands are on the ground.
  She crawled on all fours over to the window.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

four

four /ˈfoɚ/ noun, pl fours
1 [count] : the number 4
2 [count] : the fourth in a set or series
• the four of hearts
3 [noncount] : four o'clock
• “What time is it?” “It's four.”
• I leave each day at four.

- see also all fours

- four adj
• waiting for four hours
- four pronoun
Four (of them) are broken.

three

three [number]

The number 3

US /θriː/ 
UK /θriː/ 

سه

مثال: 

I've got three sisters.

Oxford Essential Dictionary

three

 number
3

Longman Dictionary of Contemporary English

three

three S1 /θriː/ BrE AmE number
[Language: Old English; Origin: thrie, threo]
1. the number 3:
They’ve won their last three games.
We’d better go. It’s almost three (=three o'clock).
My little sister’s only three (=three years old).
2. in threes in groups of three people or things:
Teachers taking part will be asked to work in threes. ⇨ ↑threesome, ↑third

Oxford Advanced Learner's Dictionary

three

three [three threes]   [θriː]    [θriː]  number
3  There are examples of how to use numbers at the entry for five.
more at in twos and threes at  two
Idiom: three Rs  
Word Origin:

Old English thrīe (masculine), thrīo, thrēo (feminine), of Germanic origin; related to Dutch drie and German drei, from an Indo-European root shared by Latin tres and Greek treis.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

three / θriː / number

A1 the number 3:

I've got three sisters.

School finishes at three (o'clock).

Collins COBUILD Advanced Learner’s English Dictionary

three

[θri͟ː]
 
 threes
 NUM

 Three is the number 3.
  We waited three months before going back to see the specialist.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

three
 

three /ˈɵriː/ noun, pl threes
1 [count] : the number 3
2 [count] : the third in a set or series
• the three of hearts
3 [noncount] : three o'clock
• “What time is it?” “It's three.”
• I leave each day at three.
in threes : in groups of three
• You'll be working in threes.
three sheets to the wind
- see 2sheet
two's company, three's a crowd
- see company
- three adj
three feet/dollars/weeks
- three pronoun
• I'll take three, please.
• Seven students passed the test and three failed.

two

two [number]

The number 2

US /tuː/ 
UK /tuː/ 

دو

مثال: 

They've got two houses.

Oxford Essential Dictionary

two

 number
2

in two into two pieces:
The cup fell on the floor and broke in two.

Longman Dictionary of Contemporary English

two

two /tuː/ BrE AmE number
[Language: Old English; Origin: twa]
1. the number 2:
I’ll be away for almost two weeks.
We have to be there by two (=two o'clock).
His family moved to Australia when he was two (=two years old).
2. in twos in groups of two people or things:
I’d like you to line up in twos, please. ⇨ ↑twosome
3. put two and two together to guess the meaning of something you have heard or seen:
I saw him leaving her house and I put two and two together.
4. that makes two of us spoken used to tell someone that you are in the same situation and feel the same way:
‘But I don’t know anything about children!’ ‘Well, that makes two of us.’
5. two can play at that game spoken used to tell someone that they will not have an advantage over you by doing something because you can do it too
6. a year/a week/a moment/an hour etc or two spoken one or a few years, weeks etc
7. two sides of the same coin used to talk about two ways of looking at the same situation
8. two heads are better than one used to say that two people are more likely to solve a problem or think of an idea than one person working alone
9. be in two minds (about something) British English, be of two minds (about something) American English to be unable to decide what to do, or what you think about something:
I was in two minds about whether to go with him.
10. two cents (worth) American English informal your opinion or what you want to say about a subject:
Everyone had to put in their two cents worth.
11. two’s company, three’s a crowd used to say that it is better to leave two people alone to spend time with each other
don’t care two hoots at ↑hoot1(5), ⇨ two/three etc of a kind at ↑kind1(5), ⇨ be two/ten a penny at ↑penny(11), ⇨ in ones and twos at ↑one1(3), ⇨ it takes two to tango at ↑tango2(2), ⇨ kill two birds with one stone at ↑kill1(13), ⇨ no two ways about it at ↑way1(54), ⇨ fall between two stools at ↑fall1(32)
• • •
THESAURUS
pair two things of the same type that you use together. Also used about two people who do something together or who you often see together: a pair of shoes | a pair of socks | Winners will receive a pair of tickets for the show. | The pair were arrested six days after the killing. | They're a funny pair! | The British pair will be playing in the final on Saturday.
a couple (of something) two things of the same type, or a very small number of things: There were a couple of empty seats at the table. | Do you have any stamps? I just need a couple.
couple noun [countable] two people who are married or having a sexual relationship: a married couple | The couple met at university.
twins noun [plural] two children who were born on the same day to the same mother: The twins look very alike. | identical twins
duo noun [countable] two people who perform together or who are often seen together: a comedy duo
duet noun [countable] a piece of music written for two people to play: They played a duet by Brahms.
twice two times adverb: The group meets twice a week. | She sneezed twice.
■ for two people
for two for two people: A table for two, please.
double bed/double room a bed for two people, or a room that has a bed for two people in it: I'd like to book a double room.
twin beds/twin room two separate single beds, or a room with two separate single beds: We asked for a twin room, and they've give us a double room.

Oxford Advanced Learner's Dictionary

two

two [two twos]   [tuː]    [tuː]  number
2  There are examples of how to use numbers at the entry for five.
more at be in two minds about sth/doing sthbe of two minds about sth/doing sth at  mind  n., in two shakesin a couple of shakes at  shake  n.
Idioms: day/moment/pound or two  fall between two stools  in two  in twos and threes  it takes two to do something  not have two beans/brain cells to rub together  put two and two together  that makes two of us  two sides of the same coin  
Word Origin:

Old English twā (feminine and neuter) of Germanic origin; related to Dutch twee and German zwei, from an Indo-European root shared by Latin and Greek duo. Compare with twain.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

two / tuː / number

A1 the number 2:

They've got two houses.

He'll be two (years old) in February.

Collins COBUILD Advanced Learner’s English Dictionary

two

[tu͟ː]
 
 twos

 1) NUM Two is the number 2.
 2) PHRASE If you say it takes two or it takes two to tango, you mean that a situation or argument involves two people and they are both therefore responsible for it.
  Divorce is never the fault of one partner; it takes two...
  It takes two to tango and so far our relationship has been one-sided.
 3) PHRASE: V inflects If you put two and two together, you work out the truth about something for yourself, by using the information that is available to you.
  Putting two and two together, I assume that this was the car he used.
 4) to kill two birds with one stonesee bird
 two a pennysee penny

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

two

two /ˈtuː/ noun, pl twos
1 [count] : the number 2
2 [count] : the second in a set or series
• page two
3 [noncount] : two o'clock
• It was two in the morning.
a bird in the hand is worth two in the bush
- see bird
a thing or two
- see thing
in two : into two equal parts : in half
• He cut the apple in two.
in twos : in groups of two
• You will be working in twos. [=in pairs]
in two shakes
- see 2shake
it takes two, it takes two to tango
- see 1take
of two minds, in two minds
- see 1mind
put two and two together : to make a correct guess based on what you have seen or heard : to figure something out
• You weren't home so I put two and two together and went back to your office to find you.
put/stick two fingers up at someone
- see 1finger
serve two masters
- see 1serve
two by two : in groups of two : in pairs
• The children lined up two by two.
two cents
- see cent
two left feet
- see 1foot
two's company, three's a crowd
- see company
two sides of the same coin
- see 1coin

one

one [number,determiner] (NUMBER)

The number 1

US /wʌn/ 
UK /wʌn/ 

یک

مثال: 

You've got three bags and I've only got one.

Oxford Essential Dictionary

number, adjective

1 the number 1:
One and one make two (1 + 1 = 2).
Only one person spoke.

2 a person or thing, especially when they are part of a group:
One of my friends is ill.
I've lost one of my books.

3 only:
You are the one person I can trust.

4 used for talking about a particular time, without saying exactly when:
I'll come over one evening.

one by one first one, then the next, etc.; separately:
Please come in one by one.

Longman Dictionary of Contemporary English

one

I. one1 S1 W1 /wʌn/ BrE AmE number
1. the number 1:
They had one daughter.
one hundred and twenty-one pounds
Come back at one (=one o'clock).
Katie’s almost one (=one year old).
2. one or two a small number of people or things SYN a few:
There are one or two things to sort out before I leave.
one or two of
One or two of us knew him quite well.
3. in ones and twos British English alone or in pairs, rather than in large numbers or groups:
Guests arrived in ones and twos.

Oxford Advanced Learner's Dictionary

one

one [one ones] number, determiner, pronoun   [wʌn]    [wʌn]

number, determiner
1. the number 1
Do you want one or two?
There's only room for one person.
One more, please!
• a one-bedroomed apartment

• I'll see you at one (= one o'clock).

2. used in formal language or for emphasis before hundred, thousand, etc, or before a unit of measurement
• It cost one hundred and fifty pounds.

• He lost by less than one second.

3. used for emphasis to mean ‘a single’ or ‘just one’

• There's only one thing we can do.

4. a person or thing, especially when they are part of a group
• One of my friends lives in Brighton.

• One place I'd really like to visit is Bali.

5. used for emphasis to mean ‘the only one’ or ‘the most important one’
He's the one person I can trust.
• Her one concern was for the health of her baby.

• It's the one thing I can't stand about him.

6. used when you are talking about a time in the past or the future, without actually saying which one
• I saw her one afternoon last week.

One day (= at some time in the future) you'll understand.

7. the same

• They all went off in one direction.

8. (informal, especially NAmE) used for emphasis instead of a or an
• That was one hell of a game!

• She's one snappy dresser.

9. used with a person's name to show that the speaker does not know the person
Syn:  certain
He worked as an assistant to one Mr Ming.
more at all in one at  all  pron., be in a minority of one at  minority, back to square one at  square  n.  
Word Origin:
Old English ān, of Germanic origin; related to Dutch een and German ein, from an Indo-European root shared by Latin unus. The initial w sound developed before the 15th cent. and was occasionally represented in the spelling; it was not accepted into standard English until the late 17th cent.  
Grammar Point:
one / ones
One/ones is used to avoid repeating a countable noun, but there are some times when you should not use it, especially in formal speech or writing:
After a possessive (my, your, Mary’s, etc.), some, any, both or a number, unless it is used with an adjective: ‘Did you get any postcards?’ ‘Yes, I bought four nice ones.’ ◊ I bought four ones.
It can be left out after superlatives, this, that, these, those, either, neither, another, which, etc: ‘Here are the designs. Which (one) do you prefer?’ ‘I think that (one) looks the most original.’
These ones and those ones are not used in NAmE, and are unusual in BrE: Do you prefer these designs or those?
It is never used to replace uncountable nouns and is unusual with abstract countable nouns: The Scottish legal system is not the same as the English system, is better than …as the English one.

Idioms: as one  at one  for one  get one over somebody  get something in one  go one better  in one  one after the other  one and all  one and only  one and the same  one by one  one for something  one or two  one up  when you've seen/heard one/you've seen/heard them all

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition
 

one / wʌn / number , determiner (NUMBER)

A1 the number 1:

You've got three bags and I've only got one.

She'll be one year old tomorrow.

Collins COBUILD Advanced Learner’s English Dictionary

one

[wʌ̱n]
 
 ones

 1) NUM One is the number 1.
  They had three sons and one daughter.
  ...one thousand years ago...
  Scotland beat England one-nil at Wembley.
  ...one of the children killed in the crash.
 2) ADJ: det ADJ (emphasis) If you say that someone or something is the one person or thing of a particular kind, you are emphasizing that they are the only person or thing of that kind.
  They had alienated the one man who knew the business...
  His one regret is that he has never learned a language.
  Syn:
  only
 3) DET: DET sing-n (emphasis) One can be used instead of `a' to emphasize the following noun.
  There is one thing I would like to know - What is it about Tim that you find so irresistible?...
  One person I hate is Russ.
 4) DET: DET adj sing-n (emphasis) You can use one instead of `a' to emphasize the following adjective or expression. [INFORMAL]
  If we ever get married we'll have one terrific wedding...
  It's like one enormous street carnival here.
 5) DET: DET n-proper You can use one in front of someone's name to indicate that you have not met them or heard of them before. [FORMAL]
  It seems that the fifth man is one John Cairncross.
  Syn:
  a certain
 6) DET: DET sing-n You can use one to refer to the first of two or more things that you are comparing.
  Prices vary from one shop to another...
  The road hugs the coast for hundreds of miles, the South China Sea on one side, jungle on the other.
 ADJ: det ADJ
 One is also an adjective. We ask why peace should have an apparent chance in the one territory and not the other.
 PRON
 One is also a pronoun. The twins were dressed differently and one was thinner than the other.
 7) PRON You can use one or ones instead of a noun when it is clear what type of thing or person you are referring to and you are describing them or giving more information about them.
  They are selling their house to move to a smaller one...
  We test each one to see that it flies well.
 8) PRON You use ones to refer to people in general.
  We are the only ones who know.
 9) PRON: PRON of n, PRON that You can use one instead of a noun group when you have just mentioned something and you want to describe it or give more information about it.
  His response is one of anger and frustration...
  The issue of land reform was one that dominated Hungary's parliamentary elections.
 10) DET: DET sing-n You can use one when you have been talking or writing about a group of people or things and you want to say something about a particular member of the group.
  `A college degree isn't enough', said one honors student.
 PRON
 One is also a pronoun. Some of them couldn't eat a thing. One couldn't even drink.
 11) QUANT: QUANT of adj-superl You use one in expressions such as `one of the biggest airports' or `one of the most experienced players' to indicate that something or someone is bigger or more experienced than most other things or people of the same kind.
  Subaru is one of the smallest Japanese car makers.
 12) DET: DET sing-n You can use one when referring to a time in the past or in the future. For example, if you say that you did something one day, you mean that you did it on a day in the past.
 one daysee day
  How would you like to have dinner one night, just you and me?...
  Then one evening Harry phoned, asking me to come to their flat as soon as possible.
 13) PRON: with supp You can use one to refer to a question, joke, remark, or subject of discussion.
  This is a tricky one to answer...
  Have you heard the one about the Irishman, the Englishman and the American?...
  I told him I'd have to think about that one.
 14) PRON You can use one to refer to an alcoholic drink. [INFORMAL]
  Other members of the committee drifted in for a quick one before closing time.
 15) PRON You use one to make statements about people in general which also apply to themselves. One can be used as the subject or object of a sentence. [FORMAL]
  If one looks at the longer run, a lot of positive things are happening...
  Where does one go from there?...
  Shares and bonds can bring one quite a considerable additional income.
 16) PHRASE: PHR after v If a group of people does something as one, all the people do the same thing at the same time or in the same way. [WRITTEN]
  The 40,000 crowd rose as one.
 17) PHRASE: oft with brd-neg, v-link PHR n/-ing If you say that someone is one for or is a one for something, you mean that they like or approve of it or enjoy doing it.
  I'm not one for political discussions...
  She was a real one for flirting with the boys.
 18) PHRASE: PHR before v (emphasis) You can use for one to emphasize that a particular person is definitely reacting or behaving in a particular way, even if other people are not.
  I, for one, hope you don't get the job.
 19) PHRASE: usu PHR pl-n (emphasis) You can use expressions such as a hundred and one, a thousand and one, and a million and one to emphasize that you are talking about a large number of things or people.
  There are a hundred and one ways in which you can raise money.
 20) PHRASE: pl-n PHR, PHR after v You can use in one to indicate that something is a single unit, but is made up of several different parts or has several different functions.
  ...a love story and an adventure all in one...
  This cream moisturises and repairs in one.
 21) PHRASE: PHR with cl You can use in ones and twos to indicate that people do things or something happens gradually and in small groups.
  They lose interest and start drifting away in ones and twos.
 22) PHRASE: PHR with cl You use one after the other or one after another to say that actions or events happen with very little time between them.
  My three guitars broke one after the other...
  One after another, people described how hard it is for them to get medical care.
 23) PHRASE: PHR n-proper The one and only can be used in front of the name of an actor, singer, or other famous person when they are being introduced on a show.
  ...one of the greatest ever rock performers, the one and only Tina Turner.
 24) PHRASE: PHR with cl You can use one by one to indicate that people do things or that things happen in sequence, not all at the same time.
  We went into the room one by one...
  One by one the houses burst into flames.
 25) PHRASE: usu PHR of pl-n You use one or other to refer to one or more things or people in a group, when it does not matter which particular one or ones are thought of or chosen.
  One or other of the two women was wrong.
 26) PHRASE: oft PHR pl-n, PHR of pl-n One or two means a few.
  We may make one or two changes...
  I've also sold one or two to an American publisher...
  I asked one or two of the stallholders about it.
  Syn:
  a few
 27) PHRASE: PHR to-inf, usu v-link PHR If you say that someone is not one to do something, you think that it is very unlikely that they would do it because it is not their normal behaviour.
  I'm not one to waste time on just anyone.
 28) PHRASE: PHR n, usu v-link PHR, PHR after v If you try to get one up on someone, you try to gain an advantage over them.
  ...the competitive kind who will see this as the opportunity to be one up on you.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary: 

1one /ˈwʌn/ noun, pl ones
1 [count] : the number 1
one, two, three, four, …
2 [count] US : a one-dollar bill
• I don't have any ones. Can you break a five?
3 [noncount] : one o'clock
• I'll be there at one.
4 [count] : the first in a set or series
• On day one of his diet, he cut out sweets.
• She wears a size one.
as one formal
1 : at the same time : all together
• They rose as one and cheered her.
2 : in agreement with each other
• We are as one on this issue.
at one with
1 : in a peaceful state as a part of something else
• I feel at one with nature. [=I feel very closely connected to nature]
2 formal : in a state of agreement with another person
• I am at one with you on this issue.
for one : as an example
• I, for one, disagree. [=I disagree]
• There were many spelling mistakes in the essay. “There” for “their,” for one.
in one : combined in a single thing
• a dictionary and thesaurus (all) in one
• a DVD and VCR player in one
the odd one out
- see 1odd

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