seven low hills on the E bank of the Tiber, on & about which Rome was originally built; Aventine, Caelian, Capitoline, Palatine (approximately in the center), Esquiline, Quirinal, & Viminal
See Seven Hills of Rome in American Heritage Dictionary 4
(sĕvˈən)
The hills upon which the ancient city of Rome was built, including the Palatine (traditional site of the founding of the city), Aventine, Caelian, Capitoline, Esquiline, Quirinal, and Viminal hills.