1 (plural Cyclops or Cyclopes /sʌɪˈkləpiːz/) Greek Mythology a member of a race of savage one-eyed giants. In the Odyssey, Odysseus escaped death by blinding the Cyclops Polyphemus.
2 (cyclops) a minute predatory freshwater crustacean which has a cylindrical body with a single central eye.
Genus Cyclops and other genera, order Cyclopoida
Origin:
via Latin from Greek Kuklōps, literally 'round-eyed', from kuklos 'circle' + ōps 'eye'
Cyclops in other Oxford dictionaries
Definition of Cyclops in the US English dictionary