n. In chess, originally, an exclamatory sentence, literally, ′ the king is dead′ : said of the opponent's king when he is in check, and cannot be released from it; hence, the position of being unable to escape from a check.n. Hence Figuratively, defeat; overthrow.In chess, to put in check (an opponent's king), so that he cannot be released. See checkmate, n., 1.Figuratively, to defeat; thwart; frustrate; baffle.