LATIN DICTIONARYLexicon Latīnum
proper noun · masculinesecond declension

Auruncī

Auruncī m pl (genitive Auruncōrum)

Meaning

  1. An Italic tribe who inhabited a region in Latium, called Ausones by the Greeks

Declension

declension
formsingularplural
nominative—Auruncī
genitive—Auruncōrum
dative—Auruncīs
accusative—Auruncōs
ablative—Auruncīs
vocative—Auruncī

Aurunci, ōrum, m., = Ausones, q.v., = Αὔρουγκοι Tzetz.
I. The Aurunci, Verg. A. 11, 318; Plin. 3, 5, 9, § 56.—Hence,
II. A.. Aurunca, ae, f., an old town in Campania (acc. to the fable, built by Auson, the son of Ulysses and Calypso, Fest. s. v. Ausoniam, p. 15): magnus Auruncae alumnus, i. e. the satirist Lucilius, whose paternal city, Suessa Aurunca, was a colony of the Aurunci, Juv. 1, 20 Rup.—Hence,
B. Au-runcus, a, um, adj., of or pertaining to Aurunca, Auruncian: senes, Verg. A. 7, 206: patres, id. ib. 7, 727: manus, id. ib. 7, 795: Suessa Aurunca, now Sessa, Vell. 1, 14.

Origins

From an earlier *Ausonci (by rhotacism), from Ancient Greek Αὔσονες (Aúsones), a name used by the Greeks to refer to various Italic peoples.

In the Academy Smith's classical dictionaries

Quick answers

What does Auruncī mean in Latin?
Auruncī, a proper noun, means “An Italic tribe who inhabited a region in Latium, called Ausones by the Greeks”.
What is the genitive of Auruncī?
The genitive singular is Auruncōrum. Auruncī is masculine, second declension.