femme fatale

 
Pronunciation: /ˌfam fəˈtɑːl/

noun (plural femmes fatales pronunc. )

  • an attractive and seductive woman, especially one who will ultimately cause distress to a man who becomes involved with her: a femme fatale who plays one man off against another in pursuit of money

Origin:

early 20th century: French, literally 'disastrous woman'