Part of town (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
area
'part of town' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for area that I've seen before include "Surface measurement" , "The measure of a surface" , "District; locale" , "Extent of a 2-dimensional surface" , "Space occupied by something" .)