Wordnet 3.0
NOUN (1)
1. 
 a card (usually plastic) that assures a seller that the person using it has a satisfactory credit rating and that the issuer will see to it that the seller receives payment for the merchandise delivered; 
- Example: "do you take plastic?"[syn: credit card, charge card, charge plate, plastic]
WordNet (r) 3.0 (2006):
credit card
    n 1: a card (usually plastic) that assures a seller that the
         person using it has a satisfactory credit rating and that
         the issuer will see to it that the seller receives payment
         for the merchandise delivered; "do you take plastic?" [syn:
         credit card, charge card, charge plate, plastic]