unloading

Concise Oxford English Dictionary © 2008 Oxford University Press:
unload/ʌnˈləʊd/

▶verb

• 1 remove a load from.

  ■ remove (goods) from a vehicle, ship, etc.

• 2 informal get rid of (something unwanted).

  ■ give expression to (oppressive thoughts).

• 3 remove (ammunition) from a gun or (film) from a camera.

– derivatives
unloader noun.