Particular region within a larger one (4)

I believe the answer is:

zone

(Other definitions for zone that I've seen before include "Designated or defined area" , "Bitter, pungent" , "A defined area as for particular purpose" , "Region with particular characteristics" , "Area; belt" .)

I've seen this clue in the Sydney Morning Herald.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.