- one of several sea nymphs, part woman and part bird, who lure mariners to destruction by their seductive singing.
- a seductively beautiful or charming woman, especially one who beguiles men: a siren of the silver screen.
- 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.
- an implement of this kind used as a whistle, fog signal, or warning device.
- any of several aquatic, eellike salamanders of the family Sirenidae, having permanent external gills, small forelimbs, and no posterior limbs.
- of or like a siren.
- seductive or tempting, especially dangerously or harmfully: the siren call of adventure.
- to go with the siren sounding, as a fire engine.
- to allure in the manner of a siren.
- 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
- one of several sea nymphs whose seductive singing was believed to lure sailors to destruction on the rocks the nymphs inhabited
- a woman considered to be dangerously alluring or seductive
- (as modifier)
- any aquatic eel-like salamander of the North American family Sirenidae, having external gills, no hind limbs, and reduced forelimbs