Card game of the rummy family, devised by Segundo Santos and Alberto Serrato in Montevideo, Uruguay, in 1939 (7)
I believe the answer is:
canasta
(Other definitions for canasta that I've seen before include "Card game like rummy" , "Card game of the rummy family" , "Card game at a scan" , "Card-game played with two packs of cards" , "Card-game, a form of rummy" .)