Black fur (5)
I believe the answer is:
sable
This clue is a double definition.
'black' is the first definition.
(sable is a kind of black)
'fur' is the second definition.
(sable is a kind of fur)
(Other definitions for sable that I've seen before include "Dark brown fur of the marten" , "(Fur from) small carnivore" , "fur coat" , "Adventurous courage" , "Bales of expensive Russian fur" .)