Bee's defense (5)
I believe the answer is:
sting
'bee's defense' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sting that I've seen before include "con trick" , "Painful wound - confidence trick" , "Wound from insect" , "Con: leader singer of Police" , "Sudden pain - swindle" .)