/ wiːk; NAmE / noun
1.
a period of seven days, either from Monday to Sunday or from Sunday to Saturday :
last / this / next week
It rained all week.
What day of the week is it?
He comes to see us once a week .
2.
any period of seven days :
a two-week vacation
The course lasts five weeks.
a week ago today (= seven days ago)
She'll be back in a week .
3.
the five days other than Saturday and Sunday :
They live in town during the week and go to the country for the weekend.
( BrE )
I never have the time to go out in the week .
4.
the part of the week when you go to work :
a 35-hour week
The firm is introducing a shorter working week .
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IDIOMS
- today, tomorrow, Monday, etc. week
- week after week
- week by week
- week in, week out
- a week next / on / this Monday, etc. | a week tomorrow, etc.
- a week yesterday, last Monday, etc.
—more at other adjective
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WORD ORIGIN
Old English wice , of Germanic origin; related to Dutch week and German Woche , from a base probably meaning sequence, series.