plural of games room

plural of boiler room

plural of engine room

plural of plant room

A safe room.

A fortified room serving as a safe hiding place for the inhabitants of a building in the event of a break-in or emergency.

plural of chat room

(US) A semi-outdoor recreation room, typically an enclosed patio or sunroom used as a sleeping patio before the advent of air conditioning.

Alternative form of chat room

plural of utility room