Main Entry: week

Pronunciation: \ˈwēk\

Function: noun

Etymology: Middle English weke, from Old English wicu, wucu; akin to Old High German wehha week and perhaps to Latin vicis change, alternation, Old High German wehsal exchange

Date: before 12th century

1 a : any of a series of 7-day cycles used in various calendars; especially : a 7-day cycle beginning on Sunday and ending on Saturday b (1) : a week beginning with a specified day or containing a specified holiday <Easter week> <the week of the 18th> (2) : a week appointed for public recognition of some cause <Fire Prevention Week>
2 a : any seven consecutive days b : a series of regular working, business, or school days during each 7-day period
3 : a time seven days before or after a specified day <last Sunday week>