short for vigorish, a small fee charged to a buyer or seller by a third-party
1968
slang
Profits of a bookmaker, a usurer, a criminal conspirator, a casino, etc: I'm not nailing you no vig for last week/ About 180 percent a year in interest, known in the trade as vigorish, vig, or juice
[1908+ fr gambling; probably fr Yiddish fr Russian vyigrysh, ''profit, winnings'']