The crossword solution for the term 'PUT MONEY ON IT' is BET, which is a three-letter word. Betting is the act of wagering money on an uncertain outcome, such as a sporting event or a game of chance. It is a popular form of gambling and is often done in casinos, racetracks, and other venues. By betting money on an uncertain outcome, people can potentially win large sums of money if their BET is successful.