coupon

a statement of due interest to be cut from a bearer bond when payable and presented for payment. a small piece of paper that allows one to get a service or product for free or at a lower price: such as one of a series of attached tickets or certificates often to be detached and presented as needed - a ticket or form authorizing purchases of rationed commodities - a certificate or similar evidence of a purchase redeemable in premiums - a part of a printed advertisement to be cut off to use as an order blank or inquiry form or to obtain a discount on merchandise or services.