werewolf

 
Pronunciation: /ˈwɛːwʊlf, ˈwɪə-, ˈwəː-/

noun (plural werewolves)

  • (in folklore) a person who changes for periods of time into a wolf, typically when there is a full moon.

Origin:

late Old English werewulf; the first element has usually been identified with Old English wer 'man'. In modern use the word has been revived through folklore studies