thimblerig /ˈθɪmbəlɹɪɡ/noun 2verb 2forms 3 noun2 •A game of skill which requires the bettor to guess under which of three small cups (or thimbles) a pea-sized object has been placed after the party operating the game rapidly rearranges them, providing opportunity for sleight-of-hand trickery; a shell game.He’ll muddle away the Begum’s fortune at thimble-rig, be caught picking pockets, and finish on board the hulks. — 1848 •One operating such a game. verb2 •To operate a thimblerig game.Old Pratt is a different kind of crook—a psalm-singing, pussyfooted old buccaneer, teaching a Bible class on Sundays and thimblerigging in Wall Street on week days. — 1916 •(figurative) To cheat (someone) by trickery.The favor is to you. I do not permit any man to thimblerig his debts to me into my debts to him. — 1905 formsthimblerigged · thimblerigging · thimblerigs