couponcode
nounUK /ˈkuː.pɒn kəʊd/
US /ˈkuː.pɑːn koʊd/
A coupon code is a short set of letters or numbers you type in to get a discount.
I used a coupon code to get ten percent off my new shoes.
OTHER MEANINGS
2. A code shared by a store to give free shipping online.
Enter the coupon code at checkout to get free delivery.
3. A special code that gives you a free gift with a purchase.
The coupon code added a free sample to my order.
4. A code used once by one person for a limited-time deal.
This coupon code expires at midnight, so use it soon.