A pocket-size case for holding papers and paper money WordNet 3.0 & Open English WordNet

A wallet is a flat case or pouch, often used to carry small personal items such as paper currency, debit cards, and credit cards; identification documents such as driver's license, identification card, club card; photographs, transit pass, business cards and other paper or laminated cards. Wikipedia

Small, flat case that can be used to carry personal items. Wikipedia Disambiguation

A flat, foldable, pocket case, for keeping paper money, credit cards, identification cards, etc. OmegaWiki

A small, folding sleeve or case designed to hold paper currency, as well as credit cards, pictures, etc. Wiktionary

A wallet or billfold (for holding banknotes). Wiktionary

A small case, often flat and often made of leather, for keeping money (especially paper money), credit cards, etc. Wiktionary

Case for keeping money. Wiktionary (translation)