The crossword solution for the term 'PUT COINS INTO, AS A METER' is FED, which is an acronym for Federal Reserve System. The Federal Reserve System is the central banking system of the United States and is responsible for controlling the nation's money supply and setting interest rates. It is also responsible for regulating the banking industry and providing financial services to depository institutions. As part of its duties, the Federal Reserve System is responsible for putting coins into meters, such as parking meters, to ensure that they are properly functioning.