castle

n 1: a large and stately mansion [syn: {palace}]

2: a large building formerly occupied by a ruler and fortified

against attack

3: the chessman that can move any number of unoccupied squares

in a direction parallel to the sides of the chessboard

[syn: {rook}]

4: interchanging the positions of the king and a rook [syn: {castling}]

v : move the king two squares toward a rook and in the same

move the rook to the square next past the king; in chess