Military. a fortified structure with ports or loopholes through which defenders may direct gunfire.
Also called garrison house. (formerly) a building, usually of hewn timber and with a projecting upper story, having loopholes for musketry.
a house built of squared logs.
Rocketry. a structure near a launching site for rockets, generally made of heavily reinforced concrete, for housing and protecting personnel, electronic controls, and auxiliary apparatus before and during launching operations.