Orally described vision for location of building (4)
I believe the answer is:
site
'building' is the definition.
Although both the answer and definition are singular nouns, I cannot see how they can define each other.
'orally described vision for location' is the wordplay.
'orally described vision for' becomes 's' (I can't justify this - if you can you should believe this answer much more).
'location' becomes 'ite' (I've seen this in another clue).
's'+'ite'='SITE'
'of' acts as a link.
Can you help me to learn more?
(Other definitions for site that I've seen before include "Spot, location" , "Position; situation" , "station" , "internet location" , "Somewhere to build, perhaps" .)