A word from Marain, a made-up language invented by Iain Banks for his society the Culture. The word's meaning is "Player of Games", which is the chosen word in the long actual name of Gernau Morat Gurgeh. (Note: "Gernau Morat Gurgeh" is a short form of his name. Culture names are long and describe where someone came from.)
See "A Few Notes On The Culture" by Iain Banks