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• the military installation from which a commander performs the functions of command

  synonym	HQmilitary headquarters
  domain topic	armed forcesarmed servicesmilitarymilitary machinewar machine
  exemplifies	pluralplural form
  hypernym	military installation
  hyponym	command postgeneral headquartersGHQguardhouse

• (usually plural) the office that serves as the administrative center of an enterprise

  synonym	central officehome basehome officemain office
  exemplifies	pluralplural form
  hypernym	business officeoffice
  hyponym	mukataa

• (plural) a military unit consisting of a commander and the headquarters staff

  domain topic	armed forcesarmed servicesmilitarymilitary machinewar machine
  exemplifies	pluralplural form
  hypernym	forcemilitary forcemilitary groupmilitary unit
  hyponym	ACEACLANTAllied Command AtlanticAllied Command Europe
  mero part	headquarters staff