friday

Fri‧day /ˈfraɪdi, -deɪ/ BrE AmE noun [uncountable and countable] (written abbreviation Fri.)
[Language: Old English; Origin: frigedæg 'day of Frigg, female god of love']
the day between Thursday and Saturday
on Friday
It’s Kate’s birthday on Friday.
Diane won’t be here Friday. American English
Friday morning/afternoon etc
Can you meet me Friday morning?
last Friday
I had a terrible time last Friday.
this Friday
We’re flying to Vienna this Friday.
next Friday (=Friday of next week)
Her appointment is next Friday.
a Friday (=one of the Fridays in the year)
We got married on a Friday.

girl Friday

ˌgirl ˈFriday BrE AmE noun [countable] British English old-fashioned
[Date: 1900-2000; Origin: Based on Man Friday, a character in the book Robinson Crusoe (1719) who does jobs for the main character, Robinson Crusoe]
a girl or woman worker who does several different jobs in an office

Oxford Advanced Learner's Dictionary

Friday

Fri·day [Friday Fridays] [ˈfraɪdeɪ] [ˈfraɪdeɪ] [ˈfraɪdi] [ˈfraɪdi] noun countable, uncountable (abbr. Fri.)

the day of the week after Thursday and before Saturday To see how Friday is used, look at the examples at Monday. Originally translated from the Latin for ‘day of the planet Venus’ Veneris dies and named after the Germanic goddess Frigga.

girl Friday

ˌgirl ˈFriday f10 [girl Friday girl Fridays] noun
a girl or a woman who is employed in an office to do several different jobs, helping other people
Word Origin:

1940s: on the pattern of man Friday.

man Friday

ˌman ˈFriday 7 noun
a male assistant who does many different kinds of work
compare girl Friday
Word Origin:

[man Friday] from Friday, a character in Defoe's novel Robinson Crusoe (1719), whom Crusoe often refers to as “my man Friday”.

Cambridge Advanced Learner's Dictionary

Cambridge Advanced Learner's Dictionary - 4th Edition

Friday / ˈfraɪ.deɪ / noun [ C or U ] ( written abbreviation Fri. )

A1 the day of the week after Thursday and before Saturday:

Shall we go to the theatre on Friday?

I leave work early on Fridays.

We're going to Paris for the weekend next Friday.

I haven't spoken to him since last Friday.

Our next meeting is on the 5th, which is a Friday.

Friday morning/afternoon/evening/night

Collins COBUILD Advanced Learner’s English Dictionary

Friday

/fraɪdeɪ, -di/
(Fridays)

Friday is the day after Thursday and before Saturday.
Mr Cook is intending to go to the Middle East on Friday.
...Friday 6 November...
I get home at half seven on a Friday.

Merriam-Webster's Advanced Learner's Dictionary

Merriam-Webster's Advanced Learner's Dictionary:

Friday

Fri·day /ˈfraɪˌdeɪ/ noun, pl -days : the day of the week between Thursday and Saturday

[count]

• She was here last Friday.
• My birthday falls on a Friday this year.
• (Brit) I'll arrive on the Monday and leave on the Friday.
• The class meets on Fridays. [=every Friday]

[noncount]

• I will arrive on Friday. = (chiefly US) I will arrive Friday.
• I'll arrive on Monday and leave on Friday.
- abbr. Fri.;
- see also good friday
- Fridays adv
• He works late Fridays. [=he works late every Friday]