The term VENDING MACHINE FEATURE is composed of two crossword solutions: SLOT (4 letters) and COINSLOT (8 letters). A SLOT is a narrow opening or aperture, usually made to receive a particular item. In the context of vending machines, slots are used to accept coins, bills, or cards in order to purchase items. A coinslot is a specific type of SLOT that is designed to accept coins. Coinslots are commonly found on vending machines, arcade games, and other coin-operated devices.