Brief hen to bear weight (6)
I believe the answer is:
lawyer
'brief' is the definition.
(slang term for a lawyer)
'hen to bear weight' is the wordplay.
I cannot really understand how this works, but
'weight' could be 'w' (short for weight) and 'w' is found in the answer.
'hen' could be 'layer' (something which lays - eggs in this case) and 'layer' is located in the leftover letters.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for lawyer that I've seen before include "Man at the bar?" , "Solicitor, for example" , "Legal practitioner" , "One qualified in legal matters" , "One gives legal advice" .)