Cy ‧ clops /ˈsaɪklɒps $ -klɑːps/ BrE AmE noun [singular]
[ Date: 1500-1600 ; Language: Latin ; Origin: Greek kyklops , from kykl- 'round' (from kyklos ; ⇨ ↑ cycle 1 ) + ops 'eye' ]
a very big man in ancient Greek stories who only had one eye in the middle of his forehead