Museum trainee getting wine (8)
I believe the answer is:
muscadet
'wine' is the definition.
(Muscadet is an example)
'museum trainee getting' is the wordplay.
'museum' becomes 'mus' (abbreviation for museum).
'trainee' becomes 'cadet' (cadet is a kind of trainee).
'getting' is a charade indicator (letters next to each other).
'mus'+'cadet'='MUSCADET'
(Other definitions for muscadet that I've seen before include "White wine variety" , "Dry white wine from the Loire valley" , "Dry French white wine" , "drink" , "one of the Whites" .)