Check"less, a. That can not be checked or restrained.
Check"mate, n. [F. Úchec et mat, fr. Per. shāh māt ceckmate, lit., the king is dead, fr. Ar. māta he died, is dead. The king, when made prisoner, or checkmated, is assumed to be dead, and the game is finished. See Chess.] 1. The position in the game of chess when a king is in check and cannot be released, -- which ends the game.