Solicitor in bed, drinking whiskey (6)
I believe the answer is:
lawyer
'solicitor' is the definition.
(thesaurus)
'bed drinking whiskey' is the wordplay.
'bed' becomes 'layer' (I've seen this before).
'drinking' indicates putting letters inside.
'whiskey' becomes 'w' (alpha bravo charlie delta ...).
'layer' going around 'w' is 'LAWYER'.
'in' is the link.
(Other definitions for lawyer that I've seen before include "Solicitor, for example" , "Man at the bar?" , "Legal practitioner" , "barman" , "Legal specialist" .)