Spellbound artist exercises (4)
I believe the answer is:
rapt
'spellbound' is the definition.
(thesaurus)
'artist exercises' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'exercises' becomes 'pt' (**).
'ra'+'pt'='RAPT'
(Other definitions for rapt that I've seen before include "Part (anag.)" , "Completely absorbed" , "carried away" , "Delighted" , "Part being transported" .)