fort Synonyms

fortress rampart castle camp bunker bulwark keep fort up donjon bastion base garrison stronghold fortify fortification citadel strong stockade stayer peelhouse post presidio lynch law rath redoubt sconce somatist station supervacaneous tower supply depot motte and bailey barracks military post command post Castro castles pillbox foxhole crenellation casbah safehold air base watchtower turret trench fasthold palisade dungeon dike