checkmate         
noun [ U ] uk/ˈtʃek.meɪt/ us/ˈtʃek.meɪt/
 (国际象棋中的)将军,将死
a winning position in chess in which you have put the other player's king under a direct attack from which it cannot escape
  失败;败局;僵局
a situation in which someone has been defeated or a plan cannot develop or continue
 Compare: stalemate