coupon means: You can redeem a discount coupon at the cash register. The coupons are available in freestanding inserts or manufacturer newspaper advertisements. They can be attached to product packages, via direct mail, in-store, or online. (in Cooking Dictionary)

What else does coupon mean?

An identifier or code on a ticket or card that allows the holder to receive a specific benefit such as cash back or gift. (in Merlin Dictionary)

The holder of bonds receives a periodic interest payment. (in Merlin Dictionary)

A coupon is a coupon that can be used to calculate the interest rate on a bond. (in Merlin Dictionary)

A small set of certificates which can be taken from bonds and used to pay interest. (in Merlin Dictionary)