"Baggage Check" refers to the process at airports where passengers can leave their luggage with airline staff before boarding their flights. This service allows travelers to avoid carrying heavy bags through security and onto the plane. Instead, the checked baggage is stored in the aircraft's cargo hold during the flight. When checking in, passengers typically present their bags at the check-in counter or a designated baggage drop-off area. Each bag is tagged with a unique identifier, ensuring it is returned to the correct passenger upon arrival at their destination. This service is especially useful for those traveling with multiple or oversized items.