A billfold containing paper money and cards.
billfold 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.
a flat, folding case, usually of leather, for carrying paper money, cards, etc. in the pocket; wallet
billfold definition by American Heritage Dictionary
A folding pocket-sized case for carrying paper money, small personal documents, and sometimes change.