Article about a neighbourhood (4)
I believe the answer is:
area
'neighbourhood' is the definition.
(I've seen this before)
'article about a' is the wordplay.
'article' becomes 'a' (indefinite article).
'about' becomes 're' (regarding).
'a'+'re'+'a'='AREA'
(Other definitions for area that I've seen before include "field of study" , "Locality" , "Extent of a 2-dimensional surface" , "Speaking formally to (someone)" , "Extent of a two-dimensional surface" .)