1) Arcade game feature 2) Laundromat machine feature 3) Vending machine feature 4) Washer attachment, at times 
[n] - the part of a slot machine that serves as a receptacle for the coins
noun the part of a slot machine that serves as a receptacle for the coins
a locked container or receptacle for holding coins deposited in a pay telephone, pinball machine, turnstile, or other coin-operated machine.