arbos

• (Classical Latin) IPA^(key): [ˈar.boːs]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈar.bos]
• Attested with a long -ō- in its nominative in Virgil (see quotation).

arbōs f (genitive arboris); third declension

1. (poetic) alternative form of arbor (“tree”)
   • c. 37 BCE – 30 BCE, Virgil, Georgics 2.66:

     Plantīs et dūrae corylī nāscuntur et ingēns / fraxinus Herculeaeque arbōs umbrōsa corōnae, / Chāoniīque patris glandēs.

     From seedlings are born both hard hazels and the large ash-tree, the shade-giving tree of Hercules' crown, acorns of the Chaonian progenitor.

Third-declension noun.

• “arbos”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• “arbos”, in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• arbos in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.