Artist isn't out to show fruit (6)
I believe the answer is:
raisin
'fruit' is the definition.
(raisin is a kind of fruit)
'artist isn't out' is the wordplay.
I cannot really understand how this works, but
'artist' could be 'ra' (Royal Academician, member of Royal Academy of Arts) and 'ra' is present in the answer.
This may be the basis of clue (or it may be nonsense).
'to show' acts as a link.
(Other definitions for raisin that I've seen before include "Dried grape used in cakes" , "Partially dried grape" , "Dried red grape" , "Dried 18" , "sultana, say" .)