Long-haired cat (6)
I believe the answer is:
angora
'long-haired cat' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for angora that I've seen before include "Fine yarn from hair of goats" , "Wool from hair of goats" , "Fine wool from certain goats" , "Cloth from the soft hair of a goat" , "Yarn made from hair of goats or rabbits" .)