a card given by a shop, supermarket, etc to its regular customers allowing them to have advantages such as lower prices, money back on goods etc 〔商店、超级市场等发给老顾客以享优惠的〕忠诚卡,积分卡
Examples from the Corpus
loyalty card• Publishers' restrictions do not, for example, allow us to issue a Dillons customer loyalty card.• He had read her Sainsbury's loyalty card account.• I flashed my supermarket loyalty card and was in.
From Longman Business Dictionary
loyalty cardˈloyalty cardCOMMERCE
a card given by a shop, SUPERMARKET etc that gives regular customers lower prices, money back on goods etc
The loyalty card offers a 5% discount on the store’s own-brand goods.