A slang term, also abbreviated to vig, for the commissionIn finance, a payment based on percentage of transaction val... or fee charged by a bookmaker or casino on a wager. Also the interest on a loan from a loan sharkSomeone who offers unsecured loans at excessive rates of int... or unregulatedNot governed or controlled by laws or rules. loan provider. The term is Yiddish (Jewish) deriving from the Russian word vyigrysh, meaning winnings.