Fragrant extract of rubber trees (5)
I believe the answer is:
ester
'fragrant extract' is the definition.
The answer and definition can be both substances as well as being singular nouns.
Maybe there's an association between them I don't understand?
'rubber trees' is the wordplay.
'trees' anagrams to 'ESTER'.
But, I am unsure how the anagram is indicated.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for ester that I've seen before include "Organic chemical compound" , "Compound; trees (anag.)" , "Reset (anag.)" , "Organic compound, rhymes with court joker" , "Chemical compound of acid and alcohol, found in trees" .)