counterfoil definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
the stub of a check, postal money order, receipt, etc. kept by the issuer as a record of the transaction
Origin: counter- plush foil
counterfoil definition by American Heritage Dictionary
The part of a check or other commercial paper retained by the issuer as a record of a transaction.