castle
castle - noun
a large and stately mansion
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
interchanging the positions of the king and a rook
castle - verb
- move the king two squares toward a rook and in the same move the rook to the square next past the king
castle - thesaurus
castling
palace
rook