What does Aruns mean in Latin?

Aruns, a proper noun, means “an Etruscan name of”.

proper noun

Aruns

Aruns, untis, m.,

I. an Etruscan name of the younger son, while the elder was called Lar or Lars [in pure Etruscan, Arnth.; Gr. Ἄρρων or Ἀρροῦνς].

I. A brother of Lucumo (Tarquinius Priscus), Liv. 1, 34.—

II. A younger son of Tarquin the Proud, Liv. 1, 56; 2, 6.—

III. A son of Porsenna, Liv. 2, 14.—

IV. An Etruscan seer, Luc. 1, 585; v. Müll. Etrusk. 1, pp. 405 and 409.