Oahu

n. island in Hawaii (U.S.)

Oahu (usually Oahu outside Hawaiian and Hawaiian English), the "Gathering Place", is the third largest of the Hawaiian Islands and most populous of the islands in the State of Hawaii. Including small close-in offshore islands such as Ford Island and the islands in Kaneohe Bay and off the eastern coast, it has a total land area of 1,545.3 km² (596.7 mile²). In greatest dimension, this volcanic island is 71 km (44 mi) long and 48 km (30 mi) across. The length of the shoreline is 366 km (227 mi). The island is the result of two separate shield volcanoes: Waianae and Koolau, with a broad "valley" or saddle (the central Oahu Plain) between them. The highest point is Mt. Kaala in the Waianae Range, rising to 1,220 m (4,003 ft) above sea level.
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Noun
1. an island of central Hawaii (between Molokai and Kauai); the chief island of the state
(synonym) Oahu Island
(hypernym) island
(part-holonym) Hawaiian Islands, Sandwich Islands
(part-meronym) Honolulu, capital of Hawaii, Hawaiian capital