cou·pon
noun \ˈkü-ˌpän, ˈkyü-\
Definition of COUPON
1
: a statement of due interest to be cut from a bearer bond when payable and presented for payment;
also : the
interest rate of a coupon
2
: a form surrendered in order to obtain an article, service, or accommodation: as
a : one of a series of attached tickets or certificates often to be detached and presented as needed
b : a ticket or form authorizing purchases of rationed commodities
c : a certificate or similar evidence of a purchase redeemable in premiums
d : 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