castle
noun(cas-tle)
a large and stately mansion
castle
noun(cas-tle)
(chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard
castle
noun(cas-tle)
interchanging the positions of the king and a rook
castle
noun(cas-tle)
a large building formerly occupied by a ruler and fortified against attack
castle
verb(cas-tle)
move the king two squares toward a rook and in the same move the rook to the square next past the king