Head covering gangster (4)
I believe the answer is:
hood
I believe this is a double definition.
'head covering' is the first definition.
(I've seen this before)
'gangster' is the second definition.
(I've seen this before)
(Other definitions for hood that I've seen before include "Part of subfusc" , "Cover - American gangster - Robin?" , "Head covering or American car bonnet" , "See 13" , "See 5" .)