Cas·tle v. i. [imp. & p. p. Castled p. pr. & vb. n. Castling ] Chess To move the castle to the square next to king, and then the king around the castle to the square next beyond it, for the purpose of covering the king.
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Cast·ling n. That which is cast or brought forth prematurely; an abortion.
Cas·tling n. Chess A compound move of the king and castle. See Castle, v. i.
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castling
n : interchanging the positions of the king and a rook [syn: castle]