Definition of 'siren'

Noun

1. a sea nymph (part woman and part bird) supposed to lure sailors to destruction on the rocks where the nymphs lived; "Odysseus ordered his crew to plug their ears so they would not hear the Siren's fatal song"
2. a woman who is considered to be dangerously seductive
      Synonyms: enchantress temptress Delilah femme fatale
3. a warning signal that is a loud wailing sound
4. an acoustic device producing a loud often wailing sound as a signal or warning
5. eellike aquatic North American salamander with small forelimbs and no hind limbs; have permanent external gills

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