KO shot? (5)
I believe the answer is:
outer
'shot?' is the definition.
(I've seen this before)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for outer that I've seen before include "Objective" , "Route (anag.)" , "Away from the centre" , "External; part of archery target" , "Outside; external" .)