Meaning of OFFICE in English
1》 a room, set of rooms, or building used as a place of business for clerical, administrative, or similar work.
2》 a position of authority or service.
↘tenure of an official position.
3》 (usu. ~s ) a service done for others.
4》 (also Divine Office ) Christian Church the services of prayers and psalms said daily by Catholic priests or other clergy.
5》 ( ~s ) Brit. dated the parts of a house given over to household work or to storage.
ME: via OFr. from L. officium 'performance of a task' (in med. L. also '~, divine service'), based on opus 'work' + facere 'do'.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004