[si.ren] n [ME, fr. MF & L; MF sereine, fr. LL sirena, fr. L siren, fr. Gk seiren] (14c) 1 often cap: any of a group of female and partly human creatures in Greek mythology that lured mariners to destruction by their singing
2. a: a woman who sings with bewitching sweetness b: temptress 3 a: an apparatus producing musical tones esp. 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 "ambulance ~" "air-raid ~"
4. [NL, fr. L]: either of two No. 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
[2]si.ren adj (1568): resembling that of a siren: enticing