Aruns, untis, m., 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.