Like that half broken finger Paul has! (7)
I believe the answer is:
painful
'like' is the definition.
Both the answer and definition are adjectives. Maybe you can see a link between them that I don't see?
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for painful that I've seen before include "Causing hurt, physical or mental" , "Causing trouble or difficulty - it hurts" , "Inflamed" , "Aching, hurtful" , "Distressing or hurtful" .)