Cyclops, a name given to three distinct classes of mythological beings: (1) a set of one-eyed savage giants infesting the coasts of Sicily and preying upon human flesh; (2) a set of Titans, also one-eyed, belonging to the race of the gods, three in number, viz., Brontes, Steropes, and Arges—three great elemental powers of nature, subjected by and subject to Zeus; and (3) a people of Thrace, famed for their skill in building.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Cyclopean Walls * Cymbeline