coupon
nounUK /ˈkuː.pɒn/
US /ˈkuː.pɑːn/
A small piece of paper that lets you pay less for something.
Mom used a coupon to buy the cereal for half price.
OTHER MEANINGS
2. A printed form you send in to ask for something or to order goods.
He filled out the coupon in the magazine to order seeds.
3. A detachable part of a bond or ticket that can be exchanged for money or goods.
She clipped the coupon from the bond to collect her interest.
4. A small piece of paper attached to a product giving information about it.
The coupon on the box listed the ingredients.