A center of organization, supply, or activity
A place of concentrated activity, influence, or importance
"The master is not in, he's gone to headquarters," said Telyanin's orderly.
After showering and dressing, he wrote a short note explaining he would be at police headquarters until midmorning and slipped it under her door.
Damian's headquarters is in Texas for now.
Very soon the spice trade had become a Portuguese monopoly, and Malacca was the great headquarters of the trade.
We're moving the headquarters again.