[ adj ] having or resembling repeated square indentations like those in a battlement <adj.all> a crenelated molding
Castle \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.
Castled \Cas"tled\, a. Having a castle or castles; supporting a castle; as, a castled height or crag.