(1):

(v. t.) Hence, to relieve from anything onerous.

(2):

(v. t.) To discharge or remove, as a load or a burden; as, to unload the cargo of a vessel.

(3):

(v. t.) To take the load from; to discharge of a load or cargo; to disburden; as, to unload a ship; to unload a beast.

(4):

(v. t.) To draw the charge from; as, to unload a gun.

(5):

(v. t.) To sell in large quantities, as stock; to get rid of.

(6):

(v. i.) To perform the act of unloading anything; as, let unload now.