Solicitor or barrister (6)
I believe the answer is:
lawyer
I believe this clue is a double definition.
'solicitor' is the first definition.
(I know that solicitor can be written as lawyer)
'barrister' is the second definition.
(I know that barrister can be written as lawyer)
(Other definitions for lawyer that I've seen before include "Advocate" , "Attorney in the US" , "barman" , "Legal adviser" , "Legal representative" .)