Priest abused drink (6)
I believe the answer is:
sprite
'drink' is the definition.
(brand of soft drink)
'priest abused' is the wordplay.
'abused' indicates anagramming the letters.
'priest' with letters rearranged gives 'SPRITE'.
(Other definitions for sprite that I've seen before include "Small, playful fairy" , "Stripe on a fairy" , "Dainty type" , "sports car" , "Naiad" .)