Definition of siren noun from the Oxford Advanced American Dictionary

     

    siren

     noun
    noun
    NAmE//ˈsaɪrən//
     
     
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  1. 1a device that makes a long loud sound as a signal or warning an air-raid siren A police car raced past with its siren wailing.
  2. 2(in ancient Greek stories) any of a group of sea creatures that were part woman and part bird, or part woman and part fish, whose beautiful singing made sailors sail toward them into rocks or dangerous waters
  3. 3a woman who is very attractive or beautiful but also dangerous
  4. 4siren voices/song/call (literary) the temptation to do something that seems very attractive but that will have bad results The government must resist the siren voices calling for tax cuts.
See the Oxford Advanced Learner's Dictionary entry: siren