Noun oahu has 1 sense
  1. Oahu, Oahu Island - an island of central Hawaii (between Molokai and Kauai); the chief island of the state
    --1 is a kind of island
    --1 is a part of Hawaiian Islands, Sandwich Islands
    --1 has parts:
     Honolulu, capital of Hawaii, Hawaiian capital; Waikiki; Pearl Harbor
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