The main administrative centre for a company or organisation.

A physician who is learning a specialty as part of a housemanship.

(UK) A person employed to give advice to people, especially young people, about which career to choose.

(military) An officer above the rank of colonel.

Synonym of school resource officer

An officer on board a man-of-war. / A custom-house officer of high rank in the United States.

a large building which contains offices on several floors, often for several firms.

plural of office block

(US) A commissioned officer who exercises general command authority and is eligible for operational command positions.

An office or institution providing telegraphic services, a place from which one could send a telegram (a historical kind of electronic message).