coupon

n. 1 form etc. As an application for a purchase etc. 2 entry form for a football pool or other competition. 3 discount voucher given with a purchase. [french couper cut]

n. A certificate of interest due, printed at the bottom of transferable bonds (state, railroad, etc.), given for a term of years, designed to be cut off and presented for payment when the interest is due; an interest warrant.