Know how to use "fewer" and "less"? Find out.
mid-14c., "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 Seirenes, mythical sisters who enticed sailors to their deaths with their songs, also in Greek "a deceitful woman," perhaps literally "binder, entangler," from seira "cord, rope."
Meaning "device that makes a warning sound" (on an ambulance, etc.) first recorded 1879, in reference to steamboats, perhaps from similar use of the French word. Figurative sense of "one who sings sweetly and charms" is recorded from 1580s. The classical descriptions of them were mangled in medieval translations and glosses, resulting in odd notions of what they looked like.
In classical mythology, evil creatures who lived on a rocky island, singing in beautiful voices in an effort to lure sailors to shipwreck and death. Odysseus ordered his crew to plug their ears to escape the Sirens' fatal song.
Note: Figuratively, a “siren” is a beautiful or tempting woman; a “siren song” is any irresistible distraction.
any member of the family Sirenidae (order Caudata), a group of four species of aquatic salamanders that resemble eels. Their long, slender bodies are usually brown, dark gray, or greenish. The forelegs are tiny, and the hind legs and pelvis are absent. Young and adults have feathery gills