A room in a hospital where plaster casts are applied.

(slang) A person or group that functions as warm bodies, especially those who serve no useful purpose.

(euphemistic, rare) A lavatory: a room intended for urination and defecation. / Used other than figuratively or idiomatically: see small, room.

(historical) A waiting room in a railway station or other public building, often including a separate lavatory. / (euphemistic, dated) Synonym of men's room: a public lavatory intended for men.

(historical) A room in which to perform one's toilet, including dressing and grooming, particularly before execution. / (originally US euphemistic) A room in which to use a toilet: a lavatory.

A room associated with a church, generally for community and charitable use.

(idiomatic, psychiatry) A cell lined with cushions used for confinement of a mentally disturbed person.

A room reserved and equipped for the handling of major incidents, such as flooding or pandemic.

(Ireland, history) A room where victims are tortured and murdered.

(dated, dialect, UK, US, New England) The main room of a house.