Chess Terminology - IBM dictionary of chess terms. - http://researchweb.watson.ibm.com/deepblue/reference/html/i.2.html
Glossary of Bridge Terms - Based on a glossary at now-defunct Beginnersbridge.com. - http://www.strauss.za.com/bridge_gloss.html
Jargon Jungle - An instructional glossary of bridge terms. - http://www.fifthchair.org/jargon/jargon_a.htm
Poker Glossary - Terms taken from the book Winning Low Limit Holdem. - http://www.conjelco.com/pokglossary.html
Dan's Poker Dictionary - Cross-referenced list of poker terms. - http://www.seriouspoker.com/dictionary.html
Card Games of Many Nations - Index of card games from various nations around the world with dictionary of basic card game terms. - http://www.pagat.com/national/index.html
GameProgrammer Glossary - Glossary of computer game programming terminology. - http://www.gameprogrammer.com/glossary.html
A Pinball Glossary - Indexed glossary of pinball terminology with illustrations. - http://www.lysator.liu.se/pinball/glossary/
Miniature Wargaming - Small, cross-referenced list of wargaming terms. - http://theminiaturespage.com/ref/glossary.html
Backgammon Glossary - Terms and jargon specific to the game of backgammon with definitions. - http://www.bkgm.com/glossary.html