region

1. region (noun) — sense 1

Definition: Any considerable and connected part of a space or surface; specifically, a tract of land or sea of considerable but indefinite extent; a country; a district; in a broad sense, a place without special reference to location or extent but viewed as an entity for geographical, social or cultural reasons.

Example: the equatorial regions

2. region (noun) — sense 2

Definition: An administrative subdivision of a city, a territory, a country.: Such a division of the city of Rome and of the territory about Rome, of which the number varied at different times; a district, quarter, or ward.

3. region (noun) — sense 3

Definition: An administrative subdivision of a city, a territory, a country.: An administrative subdivision of the European Union.