noun
coupon
KOO-pahn/ˈkuːpɑːn/
A voucher conferring entitlement to a financial benefit.
This coupon gives you twenty percent off your next purchase.

Etymology
A 'piece cut off' first named a detachable bond certificate presented for interest payment. The idea of a redeemable slip then extended to discount tickets and shopping vouchers.
In context
if you can't wait and just want one now use the coupon code thought Emporium to get 10% off site-wide
More examples
- She clips grocery coupons to save money on food.
- The bondholder redeems the coupon to collect an interest payment.
- The bond has a fixed annual coupon of five percent.
Forms
coupon · coupons
Similar words
- voucher
- A broader document exchangeable for goods, services, or payment.
- certificate
- Formally records a fact or entitlement, not necessarily a discount.