The term 'FIVE-DOLLAR BILL' can be summarized by the three-letter solution FIN. This is an abbreviation for the phrase 'five dollars, ' which is the denomination of a United States banknote. The five-dollar bill is the lowest denomination of paper currency issued by the U.S. government and is currently printed in the form of a Federal Reserve Note. It is one of the most widely circulated bills in the country, and is used to purchase goods and services.