Scent stabiliser from Big Ears and Mr Messy (9)

I believe the answer is:
ambergris
'scent stabiliser' is the definition.
'ambergris' can be an answer for 'scent' (thesaurus). I am unsure of the 'stabiliser' bit.
'big ears and mr messy' is the wordplay.
'and' means one lot of letters go next to another.
'messy' indicates anagramming the letters.
'big'+'ears'='bigears'
'bigears' after 'mr' is 'mrbigears'.
'mrbigears' with letters rearranged gives 'AMBERGRIS'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for ambergris that I've seen before include "substance floating in sea" , "Ash-grey, scented substance obtained from whales" , "A waxy substance" , "Substance from whales used in perfumes" , "Sperm whale secretion used in perfume manufacture" .)
