Mohair (6)
I believe the answer is:
angora
'mohair' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for angora that I've seen before include "Fabric made from goat-hair from Aragon" , "Yarn made from hair of goats or rabbits" , "Fine wool from goat" , "Yarn or fabric made from goat hair" , "Cloth from the soft hair of a goat" .)