Piece of Plastic You Pay With (not Credit)
Puzzle 5 of Quiet Things Piece of Cake Pack
Question is: Piece of Plastic You Pay With (not Credit)
and the answer is: DEBITCARD
Word Meaning:
DEBIT CARD — (banking) A card similar to a credit card, but which withdraws funds directly from the bank account, rather than borrowing the funds from the issuer of the card.
Definitions from Wiktionary.