IPA: /ˈkuːpɒn/
KK: /ˈkuːpɒn/
A piece of paper or a digital code that gives you a discount or a special offer when you buy something.
I used a coupon to save money on my groceries.
Coupon → The word originates from the French word 'coupons', which is the plural of 'coupon', meaning a small piece cut off. It refers to a small piece of paper that can be redeemed for a discount or a gift.
Think of a 'small piece cut off' — that's what a coupon is, a little ticket you can use to get a discount.