headquarters
n. C / Un. the main office or central building of a company or organization. It is the place where the leaders work and make important decisions.
n. the central administrative office or main building of an organization, corporation, or military unit. Often used as a collective noun for the personnel working at such a location.
The company moved its headquarters to London last year.
After the merger, the new firm established its global headquarters in a modern skyscraper downtown.
While regional branches handle daily operations, the strategic direction of the non-profit is determined exclusively by the executive team at the headquarters.
From head + quarters.
The word is plural in form but can take either a singular or plural verb ('the headquarters is' or 'the headquarters are').
He works at the headquarter.He works at the headquarters.The word must always end in 's', even when referring to a single location.