redeem a coupon/points/a voucher, etc.
► COMMERCE to use a coupon (= piece of paper used to buy goods at a lower price), points from a credit card, etc. to buy something: be redeemed against sth »
Coupons, either in or on the pack, may be redeemed against future purchases of the product.
redeem sth for sth »New legislation would enable consumers to redeem gift certificates for cash once their value falls below $10.
Main Entry: ↑redeem
Financial and business terms. 2012.