CHECKMATES
Noun
checkmates
plural of checkmate
Verb
checkmates
Third-person singular simple present indicative form of checkmate
Source: Wiktionary
CHECKMATE
Check"mate, n. Etym: [F. échec et mat, fr. Per. shah mat ceckmate,
lit., the king is dead, fr. Ar. mata 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.
2. A complete check; utter defeat or overthrow.
Check"mate, v. t. [imp. & p. p. Checkmated; p. pr. & vb. n.
Checkmating.]
1. (Chess)
Definition: To check (an adversary's king) in such a manner that escape in
impossible; to defeat (an adversary) by putting his king in check
from which there is no escape.
2. To defeat completely; to terminate; to thwart.
To checkmate and control my just demands. Ford.
Source: Webster’s Unabridged Dictionary 1913 Edition