siren

American  

[sahy-ruhn] / ˈsaɪ rən /

noun

1. Classical Mythology. one of several sea nymphs, part woman and part bird, who lure mariners to destruction by their seductive singing.

2. a seductively beautiful or charming woman, especially one who beguiles men.

   a siren of the silver screen.

   Synonyms:

   vamp, temptress, seductress

3. an acoustical instrument for producing musical tones, consisting essentially of a disk pierced with holes arranged equidistantly in a circle, rotated over a jet or stream of compressed air, steam, or the like, so that the stream is alternately interrupted and allowed to pass.

4. an implement of this kind used as a whistle, fog signal, or warning device.

5. any of several aquatic, eellike salamanders of the family Sirenidae, having permanent external gills, small forelimbs, and no posterior limbs.

---

adjective

1. of or like a siren.

2. seductive or tempting, especially dangerously or harmfully.

   the siren call of adventure.

verb (used without object)

1. to go with the siren sounding, as a fire engine.

verb (used with object)

1. to allure in the manner of a siren.

siren British  

/ ˈsaɪərən /

noun

1. a device for emitting a loud wailing sound, esp as a warning or signal, typically consisting of a rotating perforated metal drum through which air or steam is passed under pressure

2. (sometimes capital) Greek myth one of several sea nymphs whose seductive singing was believed to lure sailors to destruction on the rocks the nymphs inhabited

3. 1. a woman considered to be dangerously alluring or seductive

   2. ( as modifier )

      her siren charms

4. any aquatic eel-like salamander of the North American family Sirenidae, having external gills, no hind limbs, and reduced forelimbs

---

Other Word Forms

• sirenlike adjective

Etymology

Origin of siren

1300–50; Middle English sereyn < Old French sereine < Late Latin Sīrēna, Latin Sīrēn < Greek Seirḗn

Example Sentences

"Some don't leave the shelters, don't leave their homes, because of the situation, because sometimes we have interceptions even before there is a siren and it's scary," Ohana explained.

From Barron's • Mar. 18, 2026

The sound caused another person nearby to think ICE was actually in the area, so they activated their siren too.

From Los Angeles Times • Mar. 5, 2026

When they combined the stochastic siren method with existing measurements from individual black hole mergers, they achieved a more precise estimate of the Hubble constant.

From Science Daily • Mar. 1, 2026

Keith Richards’s first sonic memory was a siren.

From The Wall Street Journal • Feb. 25, 2026

We soon heard the siren of another police car as it pulled up behind the first.

From "It All Comes Down to This" by Karen English