Reported vision at venue (4)
I believe the answer is:
site
'venue' is the definition.
(I've seen this in another clue)
'reported vision' is the wordplay.
'reported' shows a homophone (sound like).
'vision' becomes 'sight' (synonyms).
'sight' sounds like 'SITE'.
'at' acts as a link.
(Other definitions for site that I've seen before include "station" , "setting" , "Building plot" , "Situation (of a building)" , "Locale" .)