The crossword solution for the term PLACE FOR A COIN is SLOT, which is a four-letter word. A SLOT is a narrow opening or groove in a machine or other object, typically used to hold something in place or to allow something to pass through. Slots are commonly found in coin-operated machines, such as vending machines, and are used to accept coins and dispense items. Slots are also used in many other contexts, such as in locks and safes, to secure items or to control access.