noun
holding cell; drunk tank
A temporary detention room, often in a police station, for holding individuals (e.g., intoxicated persons) before formal processing.
酔っ払いは保護室に入れられた。
The drunk was put in the holding cell.
noun
isolation room; quarantine room
A room for isolating individuals, e.g., in hospitals or care facilities, to prevent infection or for safety.
感染症の疑いがある患者は保護室に隔離された。
The patient suspected of having an infectious disease was isolated in the quarantine room.