Back end of a bray (3)
I believe the answer is:
haw
'back end of a bray' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for haw that I've seen before include "Fruit of the hawthorn" , "Hedgerow fruit" , "Berry of a thorny shrub" , "Fruit of common thorn tree (3)" , "A blackthorn berry" .)