cyclops UK /ˈsaɪˌklɒps/US /ˈsaɪˌklɑps/ noun5 •A one-eyed giant from Greek and Roman mythology. •A one-eyed creature of any species. •(offensive) A person with only one working eye. •Any copepod in the genus Cyclops. •A small magnifying lens in the crystal of a watch to aid in reading the date. formsCyclopes · Cyclopses · cyclopes · cyclopses