Bucolic painting male replaced with rhino's head (5)
I believe the answer is:
rural
'bucolic' is the definition.
(similar in meaning)
'painting male replaced with rhino's head' is the wordplay.
I cannot quite understand how this works, but
'male' could be 'al' (shortened version of Alex or Alistair) and 'al' is found in the answer.
The remaining letters 'rur' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for rural that I've seen before include "Characteristic of the countryside" , "Pastoral or agricultural" , "Connected with farming" , "Countrylike" , "Relating to country life" .)