Noun
(chess) A player holding a master's rating of over 2200 for at least 300 tournament games rated by the United States Chess Federation.
(bridge) A player who has been awarded 300 or more masterpoints in certain types of tournament by the American Contract Bridge League.
Source: en.wiktionary.orgBridge players can earn points toward various Life Master designations, which are awarded only in ACBL-sanctioned games across the country. Source: Internet
She loved playing card games; including poker and bridge, and achieved the rank of Life Master at duplicate bridge in 2013. Source: Internet