a period of seven consecutive days
a seven-day period beginning with a specified day or containing a specified event
a period of seven consecutive days considered as a unit of time
six weeks later
the working days during each seven-day period
stays in town during the week
a weekly period of work
a 35-hour week
a week beginning with a specified day or containing a specified event
Easter week
week in, week out
for an indefinite or seemingly endless number of weeks
[Old English wicu, wucu]