Whale secretion (9)
I believe the answer is:
ambergris
'whale secretion' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for ambergris that I've seen before include "Sperm whale secretion used in perfume manufacture" , "Ash-grey, scented substance obtained from whales" , "Sperm whale product used in perfumery" , "Perfume ingredient from whales" , "Wax-like substance" .)