RhymeZone: backload definitions

Definitions of backload:

noun: A load carried on the return journey of a delivery vehicle.
verb: To load toward the back, or towards the end of a period.
verb: (transport) To load (cargo, shipment, etc.) after unloading has been completed.
verb: (transitive, military) To transport further toward the rear of the theater of war.
verb: To fill a syringe with solution from the plunger end of the barrel.

(Definitions from Wiktionary)