Slot in Definition & Meaning - Merriam-Webster

A 10 cent coin Long ago in the dim mists of the 20th century, a payphone call was a dime, which was dropped into a coin slot in a tiny building

a long, narrow hole, especially one for putting coins into or for fitting a separate See more at slot (Definition of coin and slot from the Cambridge

coin combo slot machine There is one meaning in OED's entry for the noun coin-in-the-slot See 'Meaning & use' for definition, usage, and quotation evidence Entry status

coin slot aerator slots · coin machine · coin-operated machine · fruit machine · gaming machine · one-armed bandit