Legal expert just going round part of the prison (6)
I believe the answer is:
jurist
'legal expert' is the definition.
(I know that legal expert can be written as jurist)
'just going round part of the prison' is the wordplay.
'going round' indicates putting letters inside (some letters go around others).
'part of the prison' becomes 'ri' (I can't explain this - if you can you should give a lot more credence to this answer).
'just' placed around 'ri' is 'JURIST'.
Can you help me to learn more?
(Other definitions for jurist that I've seen before include "Legal scholar" , "Expert in law" , "Legal expert" .)