Meaning of UNLOAD in English
un ‧ load /ʌnˈləʊd $ -ˈloʊd/ BrE AmE verb
1 . VEHICLE/SHIP
a) [transitive] to remove a load from a vehicle, ship etc
unload something from something
The driver unloaded some boxes from the back of the truck.
b) [intransitive] if a ship unloads, the goods that it carries are removed from it
2 . GET RID OF SOMETHING [transitive] informal
a) to get rid of something illegal or not very good by selling it quickly:
Investors continued to unload technology stocks on Thursday.
unload something on/onto something
Hundreds of cheap videos were unloaded on the British market.
b) to get rid of work or responsibility by giving it to someone else
unload something on/onto somebody
Don’t let him unload his problems onto you.
3 . FEELINGS [intransitive and transitive] American English to express strong feelings, especially anger, to someone when you are extremely upset:
Koch unloaded his concerns over dinner one night.
unload (something) on somebody
When he got back to the office, Green unloaded on his staff.
4 . CAMERA [transitive] to remove the film from a camera
5 . GUN [intransitive and transitive] to remove the bullets from a gun
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012