week

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week /ˈwiːk/ noun
plural weeks
week
/ˈwiːk/
noun
plural weeks
Learner's definition of WEEK
: a period of seven days
◊ In the U.S., a week is usually considered to start on Sunday and end on Saturday, while in the U.K. a week is usually considered to start on Monday and end on Sunday.
[count]
[noncount]
see also holy week
[count] : any period of seven days in a row
[count] : the days from Monday through Friday when people usually work

week in and week out

also week in, week out
: every week for many weeks : for a long time without stopping or changing
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