head ‧ quar ‧ ters W3 /ˈhedˌkwɔːtəz, ˌhedˈkwɔːtəz $ -ɔːrtərz/ BrE AmE noun ( plural headquarters ) [countable] ( abbreviation HQ )
1 . the main building or offices used by a large company or organization:
the headquarters of the United Nations
2 . the place from which military operations are controlled