Meaning of castle

Definition of 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
(verb) move the king two squares toward a rook and in the same move the rook to the square next past the king

Other information on castle

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