Artist with lovely vegetable (6)
I believe the answer is:
radish
'vegetable' is the definition.
(radish is a kind of vegetable)
'artist with lovely' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'with' means one lot of letters go next to another.
'lovely' becomes 'dish' (I've seen this before).
'ra'+'dish'='RADISH'
(Other definitions for radish that I've seen before include "Pungent fleshy edible root eaten in salads" , "Root vegetable used in salads" , "Root eaten raw in salads" , "Daikon or mooli" , "Bit of salad" .)