By means of gravity, artist creates something arousing (6)
I believe the answer is:
viagra
'something arousing' is the definition.
(as in the drug)
'by means of gravity artist' is the wordplay.
'by means of' becomes 'via' (via can mean 'by means of' or 'using').
'gravity' becomes 'g'.
'artist' becomes 'RA' (Royal Academician, member of Royal Academy of Arts).
'via'+'g'+'ra'='VIAGRA'
'creates' is the link.
(Other definitions for viagra that I've seen before include "Drug aiding one's sex life" , "Treatment" , "Sildenafil citrate" , "Male sexual aid" , "Performance-enhancing drug?" .)