Synonyms and related words :
acropolis, bastion, beachhead, bishop, blockhouse, bridgehead, bunker, chateau, chessman, citadel, court, donjon, fasthold, fastness, fort, fortress, garrison, garrison house, hall, hold, keep, king, knight, man, manor, mansion, martello, martello tower, mote, motte, palace, palais, palatial residence, palazzo, pawn, peel, peel tower, piece, pillbox, post, queen, rath, rook, safehold, strong point, stronghold, tower, tower of strength, villa, ward