May 27, 2025 cyclops ˈsī-ˌkläps 2 syllables uncommon ‹ noun.any of a race of giants in Greek mythology with a single eye in the middle of the forehead noun.any of a genus (Cyclops) of freshwater predatory copepods having a single median eye › Origin Latin, from Greek Kyklōps, from kykl- cycl- + ōps eye.