WordRel.com

• interchanging the positions of the king and a rook

  synonym	castling
  hypernym	chess move
  hyponym	castling longcastling shortlong castlelong castlingshort castleshort castling

• a large building formerly occupied by a ruler and fortified against attack

  hypernym	fortificationmunition
  instance hyponym	Balmoral Castle
  mero part	donjondungeonkeepturret

• (chess) the piece that can move any number of unoccupied squares in a direction parallel to the sides of the chessboard

  synonym	rook
  domain topic	chesschess game
  hypernym	chess piecechessman

• a large and stately mansion

  synonym	palace
  hypernym	hallmansemansionmansion houseresidence
  instance hyponym	Buckingham Palace
  mero part	great hall

• move the king two squares toward a rook and in the same move the rook to the square next past the king

  derivation	castling
  domain topic	chesschess game
  hypernym	gomove