Definition from Wiktionary, the free dictionary
- Rhymes: -aɪərən
siren (plural sirens)
- (original sense) (Greek mythology) One of a group of nymphs who lured mariners to their death on the rocks.
- A device, either mechanical or electronic, that makes a piercingly loud sound as an alarm or signal, or the sound from such a device.
- A dangerously seductive woman.
- A common name for salamanders of Siren and Sirenidae.
- A common name for mammals of Sirenia.
nymph of Greek mythology
device for making a sound alarm
dangerously seductive woman
kind of salamander
Derived terms 
- Relating to or like a siren.
- Webster's Seventh New Collegiate Dictionary, Springfield, Massachusetts, G.&C. Merriam Co., 1967