(dated) A room in a hotel where refreshments are served.

A room for playing games, a rec room

A room containing various puzzles and riddles that players must solve in order to escape.

plural of escape room

plural of elephant in the room

A restroom for girls.

A restroom for boys.

(sometimes capitalized) A room housing a pump, especially a room or structure at a spa where mineral water is drawn from a spring and consumed, formerly often serving as a venue for polite socializing and conversation.

storeroom in a house where odds and ends, especially furniture, can be stored

(chiefly US, euphemistic) Synonym of ladies' room: a public lavatory intended for women.