Good man leaves lawyer railing (7)
I believe the answer is:
barrier
'railing' is the definition.
(I've seen this before)
'good man leaves lawyer' is the wordplay.
I cannot really see how this works, but
'man' could be 'barrie' and 'barrie' is found within the answer.
A single letter 'r' remains 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 barrier that I've seen before include "dam" , "it's soundly broken!" , "Obstacle that prevents entrance" , "Blockade, railing" , "Obstacle to movement" .)