The Collaborative International Dictionary of English v.0.48:

Pawnbroker \Pawn"bro`ker\, n.
   One who makes a business of lending money on the security of
   personal property pledged or deposited in his keeping.
   [1913 Webster]

WordNet (r) 3.0 (2006):

pawnbroker
    n 1: a person who lends money at interest in exchange for
         personal property that is deposited as security

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "pawnbroker":
   Realtor, Shylock, bank, banker, bill broker, broker, cambist,
   cotton broker, credit union, diamond broker, discount broker,
   estate agent, finance company, finance corporation,
   furniture broker, grain broker, hock shop, hotel broker,
   insurance broker, land broker, lender, lending institution,
   loan officer, loan shark, loaner, money broker, money changer,
   moneylender, moneymonger, mortgage broker, mortgage company,
   mortgage holder, mortgagee, note broker, pawnbrokery, pawnshop,
   real estate agent, real estate broker, ship broker, stockbroker,
   usurer



Bouvier's Law Dictionary, Revised 6th Ed (1856):

PAWN-BROKER. One who is lawfully authorized to lend money, and actually
lends it, usually in small sums, upon pawn or pledge.