noun
luggage compartment; cargo bay; baggage compartment
Refers to a dedicated space for luggage or cargo, especially on aircraft, trains, or buses.
飛行機の荷物室にスーツケースを預けた。
I checked my suitcase into the aircraft's cargo bay.
バスの荷物室に大きな荷物を入れてください。
Please put large luggage in the bus's luggage compartment.
Compound of 荷物 (にもつ, 'luggage') and 室 (しつ, 'room').