WordNet (r) 3.0 (2006):

rake off
    v 1: take money from an illegal transaction

Moby Thesaurus II by Grady Ward, 1.0:

81 Moby Thesaurus words for "rake off":
   allotment, allowance, big end, bigger half, bit, bite, budget,
   capital gains, chunk, cleanup, clear profit, commission,
   contingent, cut, deal, destiny, dividend, dividends, dole,
   earnings, end, equal share, fate, filthy lucre, gain, gains, get,
   gettings, gleanings, gross, gross profit, half, halver, helping,
   hoard, income, interest, killing, lot, lucre, makings, measure,
   meed, mess, modicum, moiety, neat profit, net, net profit,
   paper profits, part, pelf, percentage, perk, perks, perquisite,
   pickings, piece, portion, proceeds, profit, profits, proportion,
   quantum, quota, ration, receipts, return, returns, royalty,
   segment, share, slice, small share, stake, stock, store, take,
   take-in, wealth, winnings