1. (n.) The residence of a sovereign, including the lodgings of high officers of state, and rooms for business, as well as halls for ceremony and reception.

2. (n.) The official residence of a bishop or other distinguished personage.

3. (n.) Loosely, any unusually magnificent or stately house.

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