Werewolf (noun)

A person who can change into a wolf or wolflike creature, especially at the full moon, in folklore and legends.

Origin:

Middle english werwolf, from old english werwulf, from wer man + wulf wolf.

Examples:

1. The villagers were afraid of the werewolf that roamed the forest.
2. The werewolf legend is present in many cultures.
3. She was convinced that her neighbor was a werewolf.
4. The werewolf transformation was portrayed in the movie.
5. The werewolf howled at the full moon.