Jacket or parka (4)
I believe the answer is:
coat
I believe this clue is a double definition.
'jacket' is the first definition.
(I've seen this in another clue)
'parka' is the second definition.
(I've seen this in another clue)
(Other definitions for coat that I've seen before include "Outer garment" , "Jacket" , "Warm outerwear" , "Overgarment" , "blanket" .)