shy·lock 
(shīlŏk′) Offensive
(shīlŏk′) Offensive n.
A ruthless moneylender; a loan shark.
intr.v. shy·locked, shy·lock·ing, shy·locks
To lend money at exorbitant interest rates.
[After Shylock, the ruthless Jewish usurer in William Shakespeare's The Merchant of Venice who demands a pound of his debtor's flesh as compensation for default upon a loan.]