debit card

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A bankcard used to make an electronic withdrawal from funds on deposit in a bank, as in purchasing goods or obtaining cash advances.

Wiktionary

1. n. A card much like a credit card, but which takes money directly from the bank account, rather than borrowing the money from the issuer of the card.

GNU Webster's 1913

1. n. a small usually plastic card with a magnetic coded number, similar to a credit card, which is used to pay for purchases by the electronic deduction of a sum of money (a debit) directly from the card-holder's bank account. Such cards do not require the establishment of a credit line, and such transactions do not incur any interest payments.

WordNet 3.0

1. n. a card (usually plastic) that enables the holder to withdraw money or to have the cost of purchases charged directly to the holder's bank account