A card game, also known as 'baccarat,' in which players bet on the outcome of card combinations.
From French 'chemin de fer' (railway), the original name of the game. 'Chemmy' is British slang that abbreviated the French title into a single English-sounding word.
Chemmy perfectly captures how British slang works—take a fancy French gambling game and shorten its name into something that sounds almost cute, creating a word that completely obscures its exotic origin.
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