The position in the game of chess when a king is in check and cannot be released, -- which ends the game.
- To attack (a chess opponent's king) in such a manner that no escape or defense is possible, thus ending the game.
- To defeat completely.
- A move that constitutes an inescapable and indefensible attack on a chess opponent's king.
- The position or condition of a king so attacked.
- Utter defeat.
- Used to declare the checkmate of an opponent's king in chess.