a written agreement (or property or money) delivered to a third party or put in trust by one party to a contract to be returned after fulfillment of some condition
borrowing and leaving an article as security for repayment of the loan
(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
an article deposited as security
leave as a guarantee in return for money; "pawn your grandfather's gold watch"