Castle - Definition
castle
n 1: a large and stately mansion [syn: palace, castle]
2: a large building formerly occupied by a ruler and fortified
against attack
3: (chess) the piece that can move any number of unoccupied
squares in a direction parallel to the sides of the
chessboard [syn: castle, rook]
4: interchanging the positions of the king and a rook [syn:
castle, castling]
v 1: move the king two squares toward a rook and in the same
move the rook to the square next past the king