or 'ō·'ō

[ oh-oh ]

noun,plural o’·os.
  1. any of several species of Hawaiian birds of the extinct genus Moho, especially the extinct M. nobilis (Hawaiian o'o), which had black plumage and two tufts of yellow plumes used to make ceremonial robes for the Hawaiian kings. The last surviving species was M. braccatus (Kauai o'o), classified as extinct in 1987.

Origin of o'o

First recorded in 1885–90; from Hawaiian ʿōʿō

Words Nearby o'o

Other definitions for oo- (2 of 2)


  1. a combining form meaning “egg,” used in the formation of compound words: oogamous.

Origin of oo-

<Greek ōio-, combining form of ōiónegg1

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use o'o in a sentence

British Dictionary definitions for oo-


combining form
  1. egg or ovum: oosperm

Origin of oo-

from Greek ōion egg 1

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