Ariel

Ariel, in Shakespeare's Tempest, one of the spirits of the air, where, liberated from the tyranny of Sycorax and Caliban, he gratefully and loyally serves Prospero for sixteen years as a benign supernatural agency. Pope in The Rape of the Loch makes use of the same conception. Milton (Paradise Lost, vi. 371) introduces us to a fallen angel of this name. Isaiah (xxix. 1-7) used the word in speaking of Jerusalem, and in this sense it has been explained to mean either "lion of God" or "hearth of God."