[oh-ah-hoo] 
| an island in central Hawaii: third largest and most important island of the state; location of Honolulu. 630,528; 589 sq. mi. (1525 sq. km). |
| O·a·hu (ō-ä'hōō) 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. |
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