check‧mate /ˈtʃekmeɪt/ noun [uncountable and countable]
[Date: 1400-1500; Language: Old French; Origin: eschec mat, from Arabic shah mat, from Persian, 'the king is left helpless']

1. the position of the king (=most important piece) in chess at the end of the game, when it is being directly attacked and cannot escape

2. a situation in which someone has been completely defeated
—checkmate verb [transitive]:
The king is checkmated and the game is over.

[TahlilGaran] Dictionary of Contemporary English ▲