Babylon = "confusion"

 1) a very large and famous city, the residence of the Babylonian
    kings, situated on both banks of the Euphrates. Cyrus had formerly
    captured it, but Darius Hystaspis threw down its gates and walls,
    and Xerxes destroyed the temple of Belis. At length the city was
    reduced to almost solitude, the population having been drawn off
    by the neighbouring Seleucia, built on the Tigris by Seleucus
    Nicanor.
 2) of the territory of Babylonia
 3) allegorically, of Rome as the most corrupt seat of idolatry and the
    enemy of Christianity