Floral contribution from two little boys (5)
I believe the answer is:
sepal
'floral contribution' is the definition.
Although both the answer and definition are singular nouns, I cannot see how one could define the other.
'from two little boys' is the wordplay.
I cannot really see how this works, but
'from' could be 'e' (I've seen this in other clues) and 'e' is located in the answer.
'little' could be 'l' (abbreviation for little) and 'l' is found within the answer.
The remaining letters 'spa' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for sepal that I've seen before include "Lapse about part of a flower" , "Calyx segment" , "Part of the calyx of a flower" , "Part of a flower casing" , "Part of a flowering plant" .)