Crouches, holding part that hurts (4)

I believe the answer is:
ouch
'that hurts' is the definition.
'crouches holding part' is the wordplay.
'part' says the answer is hidden in the clue.
'OUCH' can be found hidden inside 'crouches holding'.
(Other definitions for ouch that I've seen before include "Ow!" , "Pained exclamation" , "Pained sound" , "Cry of pain" , "Reaction when pricked" .)