alternative form of weeklong

A period of seven years.

(business, marketing) The period after Christmas (December 25th) until New Year's (or longer), when stores offer large discounts

plural of week-end

(UK, Canada) A week during a university's term where no teaching takes place, generally so that students may prepare for tests. / (Canada) A spring break; often specifically the March break.

(informal, humorous, chiefly Canada, US) The week during which someone menstruates.

(informal) Alternative form of monster of the week

Any of several extended holidays celebrated in China and Japan, usually early in May.

In the calendar reform, a week added to usual 52, such that every year starts on the same day

(informal) Any of the antagonists that briefly appear in episodic forms of fiction, especially television series.