Artist has supply of grapes to gorge (6)
I believe the answer is:
ravine
'to gorge' is the definition.
(I've seen this before)
'artist has supply of grapes' is the wordplay.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'has' is a charade indicator (letters next to each other).
'supply of grapes' becomes 'vine' (I can't justify this - if you can you should believe this answer much more).
'ra'+'vine'='RAVINE'
Can you help me to learn more?
(Other definitions for ravine that I've seen before include "Deep narrow gorge between mountains" , "Narrow, steep-sided valley" , "Vainer in narrow gorge" , "Deep narrow valley" , "Deep narrow gorge with steep sides" .)