Not long a lawyer (5)
I believe the answer is:
brief
This clue is a double definition.
'not long' is the first definition.
(brief means short)
'a lawyer' is the second definition.
(I've seen this before)
(Other definitions for brief that I've seen before include "Remit" , "Case given to a barrister" , "Summary of facts for barrister to consider" , "put in the picture" , "description of Macbeth's candle" .)