Small flower (6)
I believe the answer is:
floret
'small flower' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for floret that I've seen before include "Part of a cauliflower or broccoli head" , "Part of cauli head" , "Broccoli stem" , "Small flower" , "Piece of broccoli" .)