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