Roma

(declension-1) Rome (a major city, the capital of Italy and the Italian region of Lazio, located on the Tiber River; the ancient capital of the Roman Empire)
(declension-1, historical) Rome, Ancient Rome (an ancient empire based out of the city of Rome, covering vast territories in Europe, Asia and Africa; in full, Roman Empire)
(Late-Latin, declension-1) Rome and/or Constantinople (the latter as "Nova Roma")
(Ecclesiastical, Latin, declension-1, poetic) The Roman Catholic Church in general
(New-Latin, declension-1) Rome (a metropolitan city of Lazio, Italy)

Pronounced as (IPA)

[ˈroː.ma]

Uncertain. * Roman mythology derived the name from Rōmulus, name of the legendary founder and first king. This is almost certainly a folk etymology, and the name of the mythical figure is more likely derived from the city name. * The word may derive from *Roumon- or *Roumen-, an archaic name for the Tiber river that would be derived from the Proto-Indo-European root *srew- (“to flow”) (for which compare Ancient Greek ῥεῦμα (rheûma, “river”) and Στρῡμών (Strūmṓn, “Strymon, Struma”), Albanian rrymë (“stream”), Proto-Slavic *strumy (“stream”), Lithuanian stràuma (“stream”), and perhaps also Latin rūmen). If so, the intermediate source may have been an Indo-European substrate. * The word may be of Etruscan origin, as 𐌓𐌖𐌌𐌀 (ruma) was one of the Etruscan gentes, from 𐌓𐌖𐌌 (rum, “teat”). Given the lack of a secure Indo-European etymology for Rōma, this possibility is most appealing.