Libel in broadcast: one gets drunk in cocktail bars (7)
I believe the answer is:
bellini
'one gets drunk in cocktail bars' is the definition.
(Bellini is a type of cocktail)
'libel in broadcast' is the wordplay.
'broadcast' is an anagram indicator (letters scattered or cast around).
'libel'+'in'='libelin'
'libelin' anagrammed gives 'BELLINI'.
(Other definitions for bellini that I've seen before include "Italian opera composer (Norma)" , "Norma, I Puritani composer" , "Peach juice cocktail" , "Cocktail; painter; opera composer" , "Musical artist" .)