One authorised to sell alcohol (8)
I believe the answer is:
licensee
'one authorised to sell alcohol' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for licensee that I've seen before include "local host, perhaps" , "One with permit to sell alcoholic drinks" , "One allowed to sell alcohol" , "The one with the official permit" , "Person with official permit to sell, say, drink" .)