noun a body of troops stationed in a fort or fortified town.
2. garrison ·noun a fortified place, in which troops are quartered for its security.
3. garrison ·vt to secure or defend by fortresses manned with troops; as, to garrison a conquered territory.
4. garrison ·vt to place troops in, as a fortification, for its defense; to furnish with soldiers; as, to garrison a fort or town.