VIGORISH

n. surcharge on bets; interest on a payment (Slang)

Vigorish, or simply "vig", or "juice", is the amount charged by a bookmaker for his services. The term is Yiddish slang originating from the Russian word for "winnings", vyigrysh. The concept is also sometimes referred to as the overround, although this is technically different, being the percentage the event book is above 100% whereas the vigorish is the bookmaker's percentage profit on the total stakes made on the event. For example, 20% overround is vigorish of 16 2/3%. The connecting formulae are V = (100 x OR)/(100 + OR) and OR = (100 x V)/(100 - V).
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Noun
1. an exorbitant or unlawful rate of interest
(synonym) usury
(hypernym) interest rate, rate of interest
2. a percentage (of winnings or loot or profit) taken by an operator or gangster
(synonym) rake-off
(hypernym) cut

The rake. See vigorish.
  

VIGOROSO. FORTE