beach hut; beachside clubhouse
A temporary or seasonal facility at the beach offering changing rooms, showers, food, and rental equipment.
In summer, many beach huts are built along the shore.
I ate yakisoba at the beach hut.
Compound of 海 (umi, 'sea') + の (no, possessive particle) + 家 (ie, 'house'). Literally 'house of the sea'.