Scrabble?! CHECKMATE

Definitions of CHECKMATE in various dictionaries:

noun - complete victory

noun - a chess move constituting an inescapable and indefensible attack on the opponent's king

verb - place an opponent's king under an attack from which it cannot escape and thus ending 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.

Abbr.

A move that constitutes an inescapable and indefensible attack on a chess opponent’s king.

The position or condition of a king so attacked.

Used to declare the checkmate of an opponent’s king in chess.