It hurts removing penny from purse! (4)
I believe the answer is:
ouch
'it hurts' is the definition.
(both might be said when in pain)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for ouch that I've seen before include "Exclamation of pain - that hurt!" , "Reaction when pricked" , "Pained expression" , "Expression of pain" , "Pained sound" .)