Subarra - Latin of Etruscan origin

Subura - 'Etruscan quarter of Rome'

Etruscan spur (city) is practically the phonetic reverse of Lat. urbs (city) interestingly the Etruscan quarter of Rome was called Subura. As Lat. urbs is of obscure origin, and the Latin Romans evidently learned the concept of cities from the advanced Etruscans, we must first ask the question ,"where did the Etruscans come by their term for city?". In the eigth century B.C. the first major city in Italy to which the Etruscans were exposed was the Greek port city of Sybaris, it also became their major trading partner. It is quite possible that Sybaris,which according to Etruscan orthography would be written *Supuru, also became their ultimate designation for city. This scenario would leave Lat. Urbs a second hand borrowing (Sybaris > Suburu> urbis).