to remove a load from a vehicle, ship etc
unload something from something
The driver unloaded some boxes from the back of the truck.
if a ship unloads, the goods that it carries are removed from it
get rid of something[transitive] informal
to get rid of something illegal or not very good by selling it quickly:
Investors continued to unload technology stocks Thursday.
unload something on/onto something
Hundreds of cheap videos were unloaded on the British market.
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.
to express strong feelings, especially anger, to someone when you are extremely upset:
feelings[intransitive and transitive] American English
Koch unloaded his concerns over dinner one night.
unload (something) on somebody
When he got back to the office, Green unloaded on his staff.
to remove the film from a camera
to remove the bullets from a gun