Pronunciation: (kärd'hōl"dur), [key]
1. a registered member of an organization, esp. of a union or a political party, who has been issued a card in evidence of membership.
2. a person who has a borrower's card from a library.
3. a person to whom a credit card or bank card is issued.
4. (on a typewriter) either of a pair of devices able to be raised to hold stiff objects, as envelopes or cards, in place for typing.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.