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Noun: castling  kã-su-ling
  1. Interchanging the positions of the king and a rook
    - castle
Verb: castle  kã-sul
  1. (chess) move the king two squares toward a rook and in the same move the rook to the square next past the king

Derived forms: castlings

Type of: chess move, go, move

Encyclopedia: Castling

Castle, Richard