Definition of "garrison"

garrison

/ˈɡæ.ɹɪ.sən/

noun
plural garrisons
1. A permanent military post.
2. The troops stationed at such a post.
  Quotations
  My Lord the great Commander of the worlde, […] Hath now in armes ten thouſand Ianiſaries, […] And for the expedition of this war,If he thinke good, can from his garriſons,UUithdraw as many more to follow him.
  c. 1587–1588, [Christopher Marlowe], Tamburlaine the Great. […] The First Part […], 2nd edition, part 1, London: […] [R. Robinson for] Richard Iones, […], published 1592; reprinted as Tamburlaine the Great (A Scolar Press Facsimile), Menston, Yorkshire, London: Scolar Press, 1973, Act III, scene iii
3. (allusive) Occupants.
  Quotations
  “I came down like a wolf on the fold, didn’t I ? Why didn’t I telephone ? Strategy, my dear boy, strategy. This is a surprise attack, and I’d no wish that the garrison, forewarned, should escape. …”
  1913, Robert Barr, chapter 4, in Lord Stranleigh Abroad‎
4. (US, military, U.S. Space Force) A military unit, nominally headed by a colonel, equivalent to a USAF support wing, or an army regiment.
verb
third-person singular simple present garrisons, present participle garrisoning, simple past and past participle garrisoned
1. To assign troops to a military post.
2. To convert into a military fort.
3. To occupy with troops.