I stir cool cocktails for lawyer (9)
I believe the answer is:
solicitor
'for lawyer' is the definition.
(solicitor is a kind of lawyer)
'i stir cool cocktails' is the wordplay.
'cocktails' indicates anagramming the letters (I've seen 'cocktail' mean this).
'i'+'stir'+'cool'='istircool'
'istircool' is an anagram of 'SOLICITOR'.
(Other definitions for solicitor that I've seen before include "court officer" , "legal expert" , "Advocate" , "Legal representative" , "Legal practitioner" .)