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Oahu

American  
[oh-ah-hoo] / oʊˈɑ hu /
Or O'ahu

noun

  1. an island in central Hawaii: third largest and most important island of the state; location of Honolulu. 589 sq. mi. (1,525 sq. km).


Oahu British  
/ əʊˈɑːhuː /

noun

  1. an island in central Hawaii: the third largest of the Hawaiian Islands. Chief town: Honolulu. Pop: 876 151 (2000). Area: 1574 sq km (608 sq miles)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

On Sunday morning local time, officials began to stand down some evacuation and flash flood warnings on Oahu, but other parts of the state remained under threat.

From BBC • Mar. 22, 2026

As floodwaters begin to recede on Oahu, residents are returning home to assess the damage and, in many cases, what’s been lost.

From Salon • Mar. 22, 2026

Torrential rains caused homes and streets to flood on the northern coast of Hawaii’s Oahu on Friday, and local officials warned that a dam on the island could fail, sending more water into communities.

From The Wall Street Journal • Mar. 20, 2026

Shortly thereafter, the family moved to Oahu, where Otto was paid by Japanese naval intelligence to surveil the Americans’ Pacific base.

From The Wall Street Journal • Dec. 4, 2025

Below him, the dark sea gave way to a strand of white: waves slapping the northern tip of Oahu Island.

From "Unbroken" by Laura Hillenbrand

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