Barrister takes week stuffing hen (6)
I believe the answer is:
lawyer
'barrister' is the definition.
(I know that barrister can be written as lawyer)
'week stuffing hen' is the wordplay.
'week' becomes 'w' (abbreviation).
'stuffing' means one lot of letters goes inside another.
'hen' becomes 'layer' (something which lays - eggs in this case).
'w' inserted within 'layer' is 'LAWYER'.
'takes' acts as a link.
(Other definitions for lawyer that I've seen before include "One gives legal advice" , "One qualified in legal matters" , ""Let's kill all the --s" (Henry VI/2)" , "One provides legal advice" , "Attorney in the US" .)