Victor hugged by girl heading off in jacket (8)
I believe the answer is:
envelope
'jacket' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for envelope that I've seen before include "Wrapper for 31ac" , "Outer covering" , "Postal wrapper" , "Coat" , "Rectangular paper container" .)