Bit of a blossom (5)
I believe the answer is:
petal
'bit of a blossom' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for petal that I've seen before include "Colourful flower part" , "Bloom's part" , "Leapt (anag.)" , "Part of a plant's perianth that is usually brightly coloured" , "Flower part seen on plate" .)