¹si�ren \'si-ran, for 3 also si-'ren\ n [ME, fr. MF & L; MF sereine, fr. LL sirena, fr. L siren, fr. Gk seiren] 1 often cap : one 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 : a temptingly beautiful woman; esp : one who is insidiously seductive : 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 elecrically operated for producing a penetrating warning sound <ambulance ~> <air-raid ~> 4 [NL, genus name, fr. L] : any of a genus (Siren) of eel-shaped amphibians with small forelimbs but neither hind legs nor pelvis and with permanent external gills as well as lungs

²si�ren \'si-ran\ adj : resembling that of a siren : ENTICING