American English

sweater

sweat·er /ˈswɛtɚ/ noun, pl -ers [count] : a warm usually knitted piece of clothing for the upper part of your body: such as
a : one that is put on by pulling it over your head : pullover
- called also (Brit) jumper,
- see color picture 
b US : one that opens like a jacket and that is fastened in the front with buttons or a zipper - called also cardigan,

fifty

fif·ty /ˈfɪfti/ noun, pl -ties
1 [count] : the number 50
2 fifties [plural]
a : the numbers ranging from 50 to 59
b : a set of years ending in digits ranging from 50 to 59
• She is in her fifties.
• He fondly remembers growing up in the fifties. [=1950–1959]
3 [count] US : a fifty-dollar bill
• The bill for dinner came to $43, and she gave him a fifty.
- fif·ti·eth /ˈfɪftiəɵ/ adj
• their fiftieth wedding anniversary
- fiftieth noun, pl -eths [count]
• one fiftieth of the total
- fifty adj
• fifty cars in the parking lot
- fifty pronoun
• Fifty (of them) were wounded in battle.
- fif·ty·ish /ˈfɪftijɪʃ/ adj
• He looked fiftyish. [=about 50 years old]

forty

for·ty /ˈfoɚti/ noun, pl for·ties
1 [count] : the number 40
2 forties [plural]
a : the numbers ranging from 40 to 49
• The temperature outside is in the high forties.
b : a set of years ending in digits ranging from 40 to 49
• She is in her forties.
• She found some old record albums from the forties. [=from 1940–1949]
- for·ti·eth /ˈfoɚtijəɵ/ noun, pl -eths [count]
• one fortieth of the total
- fortieth adj
• his fortieth birthday
- forty adj
• forty days
- forty pronoun
• forty of her classmates
- for·ty·ish /ˈfoɚtijɪʃ/ adj
• He was tall, fortyish [=about 40 years old], and had glasses and brown hair.

nineteen

nine·teen /naɪnˈtiːn/ noun, pl -teens [count] : the number 19
- nineteen adj
• nineteen hours
- nineteen pronoun
• She bought nineteen (of them).
- nine·teenth /naɪnˈtiːnɵ/ noun, pl -teenths [count]
• The book is due back on the nineteenth (of the month).
• one nineteenth of the total cost
- nineteenth adj
• He was the country's nineteenth president.
• I was the nineteenth person to cross the finish line.
• (humorous) the nineteenth hole [=the bar at a golf course where players drink after playing a round of 18 holes of golf]
- nineteenth adv
• She finished nineteenth in the race.
• the country's nineteenth largest state

eighteen

eigh·teen /ˌeɪtˈtiːn/ noun, pl -teens [count] : the number 18
- eighteen adj
• eighteen years
- eighteen pronoun
• Eighteen (of them) were present.
- eigh·teenth /ˌeɪtˈtiːnɵ/ noun, pl -teenths [count]
• one eighteenth of the total
- eighteenth adj
• the eighteenth day
- eighteenth adv
• He finished eighteenth in the race.

seventeen

sev·en·teen /ˌsɛvənˈtiːn/ noun, pl -teens [count] : the number 17
- seventeen adj
• They lived together for seventeen years.
- seventeen pronoun
• We interviewed seventeen (of them).
- sev·en·teenth /ˌsɛvənˈtiːnɵ/ noun, pl -teenths [count]
• I'll see you on the seventeenth of April.
• The bill is due on the seventeenth (of the month).
• one seventeenth of the total
- seventeenth adj
• The paintings were made in the seventeenth century.
• He finished in seventeenth place.
- seventeenth adv
• She finished seventeenth in the race.

sixteen

six·teen /ˌsɪkˈstiːn/ noun, pl -teens [count] : the number 16
- sixteen adj
• sixteen years
- sixteen pronoun
• Sixteen (of them) will be coming tonight.
- six·teenth /ˌsɪkˈstiːnɵ/ noun, pl -teenths [count]
• I'll see you on the sixteenth of April.
• The bill is due on the sixteenth (of the month).
• one sixteenth of the total
- sixteenth adj
• The paintings were made in the sixteenth century.
• He finished in sixteenth place.
- sixteenth adv
• She finished sixteenth in the race.
• the nation's sixteenth largest city

fifteen

fif·teen /ˌfɪfˈtiːn/ noun, pl -teens [count] : the number 15
- fifteen adj
• fifteen dollars
- fifteen pronoun
• Only fifteen (of them) showed up on time.
- fif·teenth /ˌfɪfˈtiːnɵ/ noun, pl -teenths [count]
• the fifteenth of September
• one fifteenth of the total
- fifteenth adj
• the fifteenth day
- fifteenth adv
• Their boat finished fifteenth.

fourteen

four·teen /foɚˈtiːn/ noun, pl -teens [count] : the number 14
- fourteen adj
• fourteen days
- fourteen pronoun
• Fourteen (of them) are gone.
- four·teenth /foɚˈtiːnɵ/ noun, pl -teenths [count]
• The bill is due on the fourteenth (of the month).
• one fourteenth of the total
- fourteenth adj
• I finished (the race) in fourteenth place.
- fourteenth adv
• I finished fourteenth in the race.
• the nation's fourteenth largest city

concert

con·cert /ˈkɑːnsɚt/ noun, pl -certs [count] : a public performance of music
• a rock concert
• a classical concert
• The orchestra will be giving/having/holding a free concert.
- sometimes used before another noun
• a live concert performance
• a concert pianist
• a concert hall
in concert
1 formal : together
• The FBI and the local police acted in concert to solve the murder.
- often + with
• The FBI acted in concert with the local police to solve the murder.
2 : performing at a concert
• I went to hear them in concert. [=in a public performance]