an island in the S Pacific, in the SW Cook Islands: the chief island of the group. Chief settlement: Avarua. Pop: 12 188 (2001). Area: 67 sq km (26 sq miles)
Rarotonga in American English
(ˌrɑroʊˈtɔŋgə)
largest of the Cook Islands, in the South Pacific: 26 sq mi (67 sq km); pop. 10,000