0 a credit card that earns a small amount of money for a charity each time something is bought with it
1 a credit card that earns a small amount of money for an organization each time it is used to buy something:
The affinity card is held by many of the nations firefighters.
It was the world's largest independent credit card issuer, specializing in affinity cards.
As operators have grown, they have been able to offer linked machines to provide larger jackpots and affinity cards to reward frequent players.
