Meaning of “coupon” - Learner’s Dictionary

coupon

noun [ C ] uk us /ˈkuːpɒn/
CHEAP PRICE

a piece of printed paper that you can use to buy something at a cheaper price or to get something free:

Collect 10 coupons to get a free meal.
FORM

a printed form in a magazine or newspaper, that you use to send for information, enter a competition, etc

(Definition of “coupon” from the Cambridge Learner’s Dictionary © Cambridge University Press)