acropolis, bastion, beachhead, box, bridgehead, bungalow, bunker, cabin, castle, chalet, citadel, cot, cote, cottage, donjon, fasthold, fastness, fort, fortress, garrison, garrison house, hold, keep, lodge, log cabin, love nest, martello, martello tower, mote, motte, peel, peel tower, pied-a-terre, pillbox, post, rath, safehold, snuggery, strong point, stronghold, tower, tower of strength, ward