Cupón (en. Coupon)
/kuˈpon/
Slang Meanings
Valid for obtaining discounts in stores.
That coupon is a good one; you save a lot.
Ese cupón es de los buenos, te ahorras mucho.
It refers to the idea of taking advantage of something before it runs out.
You have to use that coupon before it expires.
Hay que usar ese cupón antes de que caduque.