noun
eastern part; east of a region
Refers to the eastern section of a country, region, city, organization area, etc. Often used in place names and regional descriptions, as in アメリカ東部 or 市の東部.
その国の東部では冬が長い。
In the eastern part of that country, winter is long.
市の東部に新しい病院ができた。
A new hospital was built in the eastern part of the city.