Meanings
oo1
plural oos
- obsolete(Ω, ω) The Greek letter omega.First known use 14th–16th c.
Then came ther downe goodly ladyes tweyne […] And seyde, the gret Alpha & Oo most souereyne […] had hem thedyr sent.
c. 1500, The Assembly of Gods, published 1158
oo2
plural oos
- Any of four Hawaiian birds of the genus Moho, formerly classed with the honeyeaters and now believed to be extinct.First known use 19th c.
On this visit I made careful inquiries as to the success of Mr. Gay's efforts to raise the "Oo" bird on this island.
1898, Liliuokalani, Hawaii's Story by Hawaii's Queen1 more example
Several years earlier, she had arranged to bring three pairs of the rapidly vanishing ʻōʻō bird from Hawai‘i island to Kaua‘i, hoping they would form a new colony.
2012, Julia Flynn Siler, Lost Kingdom, Grove Press, page 161
oo3
- alternativeAlternative form of ooh.
OO4
- Alternative letter-case form of oo.
- abbreviationinitialismInitialism of object-oriented.
Oo5
- A populated place in Sigi Regency, Central Sulawesi, Indonesia.
Synonyms & antonyms
nounAny of four Hawaiian birds of the genus Moho, formerly classed with the honeyeaters and now believed to be extinct.
Origin
oo · noun
- Hawaiianʻōʻō
- Englishoo
From Hawaiian ʻōʻō, resembling its call.
More words from Hawaiian
Full word history & related roots →Translations
Hawaiian ʻōʻō
- ʻōʻōTranslations
Latin moho
- mohoTranslations
Cite this entry
oo. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/oo
“oo.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/oo. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “oo,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/oo.
Source: oo on Wiktionary, CC BY-SA 4.0.