Aromatic resin (6)
I believe the answer is:
balsam
'aromatic resin' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for balsam that I've seen before include "Fragrant substance exuded by some trees" , "Fragrant ointment" , "Resin-yielding tree" , "Aromatic resin" , "Balm of Gilead" .)