Meanings

boiler room

ventricle

no vacancy

cerebral ventricle

showroom

cave

lounge

laboratory block

to leave the room

triaxial cell

stationmaster's office

cargo hold (of an aircraft, ship, etc.)

engine room

cabin crew

workshop

principal's office

(private) study room

office (e.g. the Oval Office)

listening room (e.g. in a record store)

royal family