A gambling house's percentage of each pot or stake
An illegal or unethical share or payment
[1888+; fr the rake used by casino croupiers]
The Dictionary of American Slang, Fourth Edition by Barbara Ann Kipfer, PhD. and Robert L. Chapman, Ph.D. Copyright (C) 2007 by HarperCollins Publishers. Cite This Source
Idioms and Phrases with rake off
Make an unlawful profit, as in They suspected her of raking off some of the campaign contributions for her personal use. This expression alludes to the raking of chips by an attendant at a gambling table.
[ Late 1800s