a game for two people played on a board marked with long thin triangles. Players throw dice and move pieces around the board. 十五子棋戲(棋盤上有楔形小區,兩人玩,擲骰子決定走棋步數) Topics Games and toysc2Word Originmid 17th cent.: from back + gammon, mid 18th cent.: apparently from Old English gamen or gamenian (see game), with survival of the -n ending.