A game of gin rummy.
gin rummy definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a variety of rummy in which a hand with unmatched cards totaling no more than 10 points may be exposed: the hand exposed wins or loses points, depending on whether the opponent's unmatched cards add up to a higher or lower total
Origin: origin, originally , a play on gin, suggested by rhum, early form of rummy,
gin rummy definition by American Heritage Dictionary
A variety of rummy for two or more persons in which a player may win by matching all his or her cards or may end the game by melding with unmatched cards that add up to ten points or fewer.