Egg-producer welcomes the world's top solicitor (6)
I believe the answer is:
lawyer
'solicitor' is the definition.
(I've seen this before)
'egg-producer welcomes the world's top' is the wordplay.
'egg-producer' becomes 'layer' (I can't explain this - if you can you should believe this answer much more).
'welcomes' is an insertion indicator (in sense of 'invites in').
'top' suggests taking the first letters.
The first letter of 'worlds' is 'w'.
'layer' enclosing 'w' is 'LAWYER'.
Can you help me to learn more?
(Other definitions for lawyer that I've seen before include ""Let's kill all the --s" (Henry VI/2)" , "court worker" , "Legal specialist" , "barman" , "Legal professional" .)