The male reproductive organ of a flower (6)
I believe the answer is:
stamen
'the male reproductive organ of a flower' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for stamen that I've seen before include "Section of a flower" , "Pollen-bearing organ of flowering plant" , "Flower's male reproductive organ" , "Flower pollen carrier" , "Part of flower producing pollen" .)