Love-maker had sore back (4)
I believe the answer is:
eros
'love' is the definition.
(Greek god of love)
'sore back' is the wordplay.
'back' shows that the letters should be reversed in order.
'sore' in reverse letter order is 'EROS'.
'maker had' is the link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for eros that I've seen before include "Arrow-shooting god" , "Piccadilly 14 ac statue" , "God of love - example of 1 down" , "Greek god of sexual love, Cupid to the Romans" , "Orbiter" .)