chief island of the Hawaiian Islands: 600 sq mi (1,554 sq km); pop. 876,000; chief city, Honolulu
See Oahu in American Heritage Dictionary 4
(ō-äˈho͞o)
An island of central Hawaii between Molokai and Kauai. It is the chief island of the state, with major tourist areas, including Waikiki Beach and Diamond Head, and a U.S. naval base at Pearl Harbor.