Synonyms of 'castle'

acropolis, bastion, beachhead, Bishop, blockhouse, bridgehead, bunker, chateau, chessman, citadel, court, donjon, fastness, fort, fortress, Garrison, Hall, hold, keep, King, knight, Man, manor, mansion, Martello, mote, motte, palace, palais, palazzo, pawn, peel, piece, pillbox, post, queen, rath, rook, stronghold, strong point, tower, Villa, ward