noun
private room; single room; room for one
A room for one person, often in a hotel, hospital, or dormitory; also a private room in a shared living space.
ホテルで個室を予約した。
I booked a single room at the hotel.
寮には個室と相部屋がある。
The dormitory has private rooms and shared rooms.
noun
private dining room; private room (restaurant)
A separate room in a restaurant, izakaya, or similar venue for a group to dine privately.
会食のために料亭の個室を取った。
We reserved a private room at the traditional restaurant for the dinner meeting.
noun
toilet stall; bathroom stall
An individual compartment in a public restroom.
トイレの個室が全部ふさがっていた。
All the toilet stalls were occupied.