Rustic bushes the woman’s discounted as pain in the bum (7)
I believe the answer is:
bucolic
'rustic' is the definition.
(I know that bucolic is a type of rustic)
'bushes the woman's discounted as pain in the bum' is the wordplay.
I cannot really understand how this works, but
'pain' could be 'colic' (colic is a kind of pain) and 'colic' is present in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for bucolic that I've seen before include "Pastoral poem" , "Agrarian" , "Relating to rural life" , "Of rural or pastoral life" , "Rustic - pastoral" .)