Casino chip
Casino chips and cards
Casino chips, or simply chips, were the currency used at casinos to buy into gambling games such as poker, blackjack, or roulette. (ENT: "Observer Effect"; TNG: "The Measure Of A Man", "The Royale", "The Emissary", "A Matter Of Time", "The Most Toys"; "Legacy"; "Violations"; "Liaisons"; DS9: "Badda-Bing, Badda-Bang"; VOY: "Collective")
According to the fictional character Texas, it was bad luck to count your chips at the table. (TNG: "The Royale")