castle
名词 castle:
a large and stately mansion
同义词:palace
a large building formerly occupied by a ruler and fortified against attack
(chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
同义词:rook
interchanging the positions of the king and a rook
同义词:castling
动词 castle:
move the king two squares toward a rook and in the same move the rook to the square next past the king