weekend (n.)youdaoicibaDictYouDict[weekend 词源字典]
also week-end, 1630s, from week + end (n.). Originally a northern word (referring to the period from Saturday noon to Monday morning); it became general after 1878. As an adjective, "only on weekends," it is recorded from 1935. Long weekend attested from 1900; in reference to Great Britain in the period between the world wars, 1944.[weekend etymology, weekend origin, 英语词源]