A reinforced room within a building where the occupants can take shelter during severe storms.

An assembly room.

A room containing exercise equipment for weight training.

(informal) Space to manoeuvre within an otherwise rigid system or framework.

A room used for storing horse tack and related accessories, usually situated near or in a stable.

anechoic chamber

(cryptography) A governmental facility for intercepting and decrypting communications.

A room or office within a hospital or medical centre where a medical consultation takes place

(historical, education) Synonym of opportunity class (“separate class for teaching backward children”)

(slang) Synonym of supervised injection site