vig·o·rish 
(vĭgər-ĭsh)
(vĭgər-ĭsh)n.
Slang
Slang
1. A fee charged for the placement of bets by an illegal gambling broker or establishment.
2. Frequent and excessive interest payments charged by an illegal moneylender.
3. The payment of such fees or interest.
[Yiddish slang, from Russian vyigrysh, winnings : vy-, out; see ud- in the Appendix of Indo-European roots + igrat', to play.]