headquarters

Từ điển American Heritage Dictionary 4th

head·quar·ters (hĕdʹkwôr'tərz)pl.n. (used with a sing. or pl. verb)
1. The offices of a commander, as of a military unit, from which orders are issued.
2. A center of operations or administration:
The company has its headquarters in the suburbs.
See Synonyms at center. 
Usage Note: The noun headquarters is used with either a singular or a plural verb. The plural is more common: The corporation's headquarters are in Boston. But when reference is to authority rather than to physical location, many people prefer the singular: Division headquarters has approved the new benefits package.

• Từ đồng nghĩa / Synonyms:
  HQ, military headquarters, central office, main office, home office, home base