noun
coin-operated snack bar; vending-machine restaurant
A roadside eatery where food and drinks are purchased from vending machines rather than from staff. Wasei-eigo; not used in English.
wasei-eigo (Japanese-coined English), from coin snack
高速道路のパーキングエリアにコインスナックがある。
There is a coin-operated snack bar at the highway rest area.
深夜のドライブ中、コインスナックでうどんを買った。
During a late-night drive, I bought udon at a vending-machine restaurant.