15 across
A
lawyer,
but
not
for
long?
(5)
A lawyer, but not for long? (5)
hints
0
checks
0
hints
The whole clue is the definition (& lit or double definition).
How the clue works
A lawyer gives you BRIEF in the legal sense — a barrister's instructions — and then not for long? clues it again as something short in duration. Two independent definitions, both pointing at the same word.