(n.) A country seat; a country or suburban residence of some pretensions to elegance.

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