Anorak part (4)
I believe the answer is:
hood
'anorak part' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for hood that I've seen before include "See 8" , "Cover - American gangster - Robin?" , "Thomas -, Eng. poet" , "Bonnet (US) - gangster (US)" , "Cover < the upper part < of tough" .)