Sirens

noun

1. One of a group of nymphs who lured mariners to their death on the rocks.
2. One who sings sweetly and charms.
3. A dangerously seductive woman.
4. A member of an order of mammals of Sirenia (first attested in French in Dominique Bouhours, Les entretiens d'Ariste et d'Eugène, 1671).
5. A member of a genus of aquatic salamanders of the family Sirenidae (originally introduced by Linnaeus, 1766, for a genus of his reptiles), commonly used for all species subsumed under the family of Sirenidae.