That hurts gift coupon in part (4)
I believe the answer is:
ouch
'that hurts' is the definition.
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for ouch that I've seen before include "brooch?" , "response to a bad pun" , "sounds painful" , "Cry of pain" , "Pained sound" .)