Lewis Short
Aruns (noun M) :
* An Etruscan name ofthe younger son, while the elder was called Lar or Lars [in pure Etruscan, Arnth.; Gr. Ἄρρων or Ἀρροῦνς].
* A brother of Lucumo (Tarquinius Priscus), Liv. 1, 34.
* A younger son of Tarquin the Proud, Liv. 1, 56; 2, 6.
* A son of Porsenna, Liv. 2, 14.
* An Etruscan seer, Luc. 1, 585; v. Müll. Etrusk. 1, pp. 405 and 409.
Charlton T. Lewis, Charles Short, A Latin Dictionary