Flower secretion (6)
I believe the answer is:
nectar
'flower secretion' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for nectar that I've seen before include "Suggary stuff in plants to attract insects" , "Food of gods" , "Sweet liquid of the gods" , "Sweet floral secretion" , "Secretion collected by bees" .)