Rendering gateway bearing beam (9)
I believe the answer is:
portrayal
'rendering' is the definition.
(thesaurus)
'gateway bearing beam' is the wordplay.
'gateway' becomes 'portal' (I've seen this before).
'bearing' indicates putting letters inside.
'beam' becomes 'ray' (synonyms).
'portal' placed around 'ray' is 'PORTRAYAL'.
(Other definitions for portrayal that I've seen before include "drawing" , "It depicts" , "Artistic depiction" , "Picture or description of royal prat" , "Imitation" .)