compartment compartment /kəmˈpɑːrtmənt/

noun

1. () A space into which an area is subdivided  ( compartment )
   a space into which an area is subdivided
     The passenger stored their luggage in the overhead compartment.
   The passenger stored their luggage in the overhead compartment.
   
   
2. () A partitioned section, chamber, or separate room within a larger enclosed area  ( compartment )
   a partitioned section, chamber, or separate room within a larger enclosed area
    I stored my luggage in the overhead compartment of the train.
   I stored my luggage in the overhead compartment of the train.