a pocket-size case for holding papers and paper money
"He reached into his wallet to pull out a few dollars for the coffee."
A small case, often flat and often made of leather, for keeping money (especially paper money), credit cards, etc.
"He carefully placed his folded bills and driver's license inside the new leather wallet before closing the flap."
In plain English: A wallet is a small bag used to carry money, credit cards, and identification papers safely.
"He checked his wallet to make sure he had enough cash for lunch."
Usage: A wallet is specifically designed to hold cash and identification documents like driver's licenses or credit cards. Do not confuse it with a purse, which typically refers to a larger bag used by women that may also carry items beyond just payment methods.
The word "wallet" comes from Middle English walet, meaning a bag or knapsack. Its origin is uncertain, but it may have derived from an assumed Old Northern French term related to the Proto-Germanic root wal-, which means "to roll."