siren

US /ˈsaɪr.ən/
UK /ˈsaɪr.ən/
"siren" picture
1.

a device that makes a loud, wailing sound as a signal or warning

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The ambulance sped down the street with its siren blaring.
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A fire truck's siren could be heard in the distance.
:
alarmhornhooterwhistle
2.

(in Greek mythology) one of a number of female creatures whose singing lured sailors to their deaths on the rocks

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Odysseus had his men tie him to the mast to resist the sirens' song.
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The myth of the sirens warns against irresistible temptations.
3.

a woman who is considered to be alluring but also dangerous

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She was a true siren, captivating every man with her charm.
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He fell under the spell of the beautiful siren.
:
femme fataletemptressenchantressseducer