Meaning of “region” - Learner’s Dictionary

region

noun uk us /ˈriːdʒən/
COUNTRY [ C ]

B1 a particular area in a country or the world:

China's coastal region
BODY [ C ]

an area of the body:

pain in the lower abdominal region
in the region of sth

approximately:

It probably cost somewhere in the region of 900 euros.

(Definition of “region” from the Cambridge Learner’s Dictionary © Cambridge University Press)