noun si·ren \ˈsī-rən, for 3 also sī-ˈrēn\

: a piece of equipment that produces a loud, high-pitched warning sound

: a woman who is very attractive but also dangerous

Siren : one of a group of female creatures in Greek mythology whose singing attracted sailors and caused them to sail into dangerous water or toward rocks

Full Definition of SIREN

often capitalized :  any of a group of female and partly human creatures in Greek mythology that lured mariners to destruction by their singing
a :  a woman who sings with enchanting sweetness
b :  temptress
c :  temptation 2
a :  an apparatus producing musical tones especially in acoustical studies by the rapid interruption of a current of air, steam, or fluid by a perforated rotating disk
b :  a device often electrically operated for producing a penetrating warning sound <an ambulance siren> <an air-raid siren>
[New Latin, from Latin] :  either of two North American eel-shaped amphibians that constitute a genus (Siren) and have small forelimbs but neither hind legs nor pelvis and have permanent external gills as well as lungs

Examples of SIREN

  1. the wailing of air-raid sirens
  2. <one of history's most famous sirens, Cleopatra charmed both Julius Caesar and Mark Antony>

Origin of SIREN

Middle English, from Middle French & Latin; Middle French sereine, from Late Latin sirena, from Latin siren, from Greek seirēn
First Known Use: 14th century


adjective si·ren \ˈsī-rən\

Definition of SIREN

:  resembling that of a siren :  enticing

First Known Use of SIREN

SIREN Defined for Kids


noun si·ren \ˈsī-rən\

Definition of SIREN for Kids

:  a device that makes a loud warning sound <an ambulance siren>


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