Potpourri scent (5)
I believe the answer is:
lilac
'potpourri scent' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lilac that I've seen before include "Mauve-like colour" , "Pale pinkish-violet" , "Spiritual knowledge" , "Genus Syringa shrub" , "Shrub with fragment purple or white flowers" .)