fire compartment
partition that separates certain parts of a building to prevent the spread of fire inside the building in the event of a fire
en-GB/ˈfaɪə kəmˈpɑːtmənt/
en-US/ˈfaɪɹ kəmˈpɑɹtmənt/
partition that separates certain parts of a building to prevent the spread of fire inside the building in the event of a fire