Artist has victory in European chasm (6)
I believe the answer is:
ravine
'chasm' is the definition.
(thesaurus)
'artist has victory in european' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'has' says to put letters next to each other.
'victory' becomes 'v'.
'european' becomes 'e' (abbreviation e.g. EU).
'ra'+'v'+'in'+'e'='RAVINE'
(Other definitions for ravine that I've seen before include "Vainer in narrow gorge" , "'Deep, steep valley (6)'" , "Deep narrow valley" , "Deep narrow gorge with steep sides" , "Deep narrow gorge between mountains" .)