Bloom, blossom (6)
I believe the answer is:
flower
This clue is a double definition.
'bloom' is the first definition.
(I know that bloom can be written as flower)
'blossom' is the second definition.
(I know that blossom can be written as flower)
(Other definitions for flower that I've seen before include "Blossom" , "prime of life" , "rose, perhaps" , "Plant cultivated for blossoms" , "Don, say" .)