- Formerly Quelpart. an island S of and belonging to South Korea. 718 sq. mi. (1860 sq. km).
- a city on and the capital of this island, on the N coast.
- a volcanic island in the N East China Sea, southwest of Korea: constitutes a province (Cheju-do) of South Korea. Capital: Cheju. Pop: 302 000 (2005 est). Area: 1792 sq km (692 sq miles)Formerly called: Quelpart