Law firm aide, for short (4)
I believe the answer is:
para
'law firm aide for short' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for para that I've seen before include "Soldier dropping to earth" , "High-jumper" , "Airdropped soldier" , "soldier potentially dropped" , "Soldier (shortened)" .)