1. a Siren : in plural Σειρῆνες, αἱ, the Sirens , mythical sisters on the south coast of Italy, who enticed seamen by their songs, and then slew them, (Odyssey by Homer) (Homer) only knows of two , whence epic dual. genitive Σειρήνοιιν.

2. metaphorically a Siren, deceitful woman , (Euripides): the Siren charm of eloquence, (Aeschines Orator)

derivation uncertain (ML)