Definition of "Pawn" :

noun: borrowing and leaving an article as security for repayment of the loan

noun: (chess) the least powerful piece; moves only forward and captures only to the side; it can be promoted to a more powerful piece if it reaches the 8th rank

noun: a person used by another to gain an end

noun: an article deposited as security

verb: leave as a guarantee in return for money

"Pawn your grandfather's gold watch."