Interchanging the positions of the king and a rook.

synonym: castle.

Roget 148: interchange, exchange; commutation, permutation, intermutation; reciprocation, transposition, rearrangement; shuffling; alternation, reciprocity; castling (at chess); hocus-pocus.    interchangeableness^†, interchangeability.    recombination; combination etc. 48.    barter etc. 794; tit for tat etc. (retaliation) 718; cross fire, battledore and shuttlecock; quid pro quo.    ... show more

Dutch: rokade
Polish: roszada