cy ‧ clone /ˈsaɪkləʊn $ -kloʊn/ BrE AmE noun [countable]
[ Date: 1800-1900 ; Language: Greek ; Origin: kykloma 'wheel' , from kykloun 'to go around' , from kyklos ; ⇨ ↑ cycle 1 ]
a very strong wind that moves very fast in a circle ⇨ hurricane , typhoon