Siren, in Greek mythology, a creature half bird and half woman who lured sailors to destruction by the sweetness of her song. According to Homer, there were two Sirens on an island in the western sea between Aeaea and the rocks of Scylla. Later the number was usually increased to three, and they were located on the west coast of Italy, near Naples.

mid-14c., in classical mythology, "sea nymph who by her singing lures sailors to their destruction," from Old French sereine (12c., Modern French sirène) and directly from Latin Siren (Late Latin Sirena), from Greek Seiren ["Odyssey," xii.39 ff.], one of the Seirēnes, the mythical sisters who enticed sailors to their deaths with their songs, also in Greek "a deceitful woman," perhaps literally "binder, entangler," from seira...

In Greek mythology, the Sirens ( Greek singular: Σειρήν, Seirḗn; Greek plural: Σειρῆνες, Seirênes) were dangerous creatures, who lured nearby sailors with their enchanting music and singing voices to shipwreck on the rocky coast of their island. Roman poets placed them on some small islands called Sirenum scopuli.