backgammon -
A victory in the game when the loser has not borne off a stone, and still has one or more stones in the winner's inner home row or on the bar.
Verb
backgammon -
To win at a backgammon game with the opponent having one or more pieces in the winner’s inner home row or on the bar.
Wikipedia
Backgammon is one of the oldest board games for two players in which the playing pieces are moved according to the roll of dice. Players win by removing all of their pieces from the board. There are many variants of backgammon, most of which share common traits.
OmegaWiki Dictionary
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backgammon A board game for two players, pieces move according to throws of the dice.
backgammon A victory in the game backgammon when the loser has not borne off a stone, and still has one or more stones in the winner's inner home row or on the bar.