Recoil in pain (5)
I believe the answer is:
wince
'recoil in pain' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for wince that I've seen before include "Start painfully" , "Involuntary grimace of pain" , "Start back in pain" , "Look disgusted" , "Make face showing pain" .)