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A chess player of the highest caliber and greatest skill. Only the strongest of professional chess players, typically having a FIDE rating of 2600 and above. A vary prestigious and rare occurrence, only 400 or so living in the world. The United States Champion would be a Grandmaster.
The state champion at age 13, Daniel was touted as a possible future Grandmaster.

He beat everyone in the city with ease, but was demolished when he finally played a real Grandmaster.
by Schweinsberg July 26, 2004
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A person of the upmost uberness, a banterholic of the greatest degree and leader of the grandmaster alliance.
In the beginning grandmaster created the banter and the alliance.
by Harold Shippman April 29, 2005
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To obtain 100 skill points in any given skill in the world of Ultima Online.
Bob managed to 7x Grand Master (GM) his newest character in less than a week. As he didn't leave his computer for days on end he had to poopsock numerous times.
by Dasspam November 08, 2009
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Grandmaster is a rank I'm overwatch that only the top 1% can achieve
Ed:"Last week I finally hit grandmaster"
Leo:"I can't seem to get out of silver"
Ed:" maybe stop playing hanzo"
by Duck man 4 October 07, 2017
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