Coupon/ˈkuːpɑːn,ˈkjuːpɑːn/ Definition 1 of 4Pro Tip 1/3Save Money Coupons often give discounts on items you would buy anyway, helping you save money. Before buying groceries, I always check for coupons to cut costs. Pro Tip 2/3Time Sensitive Coupons typically have expiration dates; use them before they lose value. This coupon expires tomorrow, so I need to use it today. Pro Tip 3/3Promotional Tool Companies use coupons for promotion, which means they might require additional spending. The coupon gave me 10% off, but only if I spent over $50.