noun, noun which may take the genitive case particle 'no'
indoors; indoor
Refers to the inside of a building or room. Often used attributively with の to modify nouns (e.g., 屋内プール 'indoor pool'). Antonym: 屋外 (outdoors).
See also: 屋外
雨の日は屋内で遊びましょう。
Let's play indoors on rainy days.
この施設には屋内プールがあります。
This facility has an indoor pool.
On rainy days, I make it a rule to exercise indoors.
This apartment building has a bicycle parking area indoors.
A typhoon is approaching, so please take shelter indoors.
屋内 means indoors, the opposite of 路上, which means out on the street or road.
indoor swimming pool
indoor cable; house cable