n.1 a a device for making a loud prolonged signal or warning sound, esp. by revolving a perforated disc over a jet of compressed air or steam. b the sound made by this.
2 (in Greek mythology) each of a number of women or winged creatures whose singing lured unwary sailors on to rocks.
3 a sweet singer.
4 a a dangerously fascinating woman; a temptress. b a tempting pursuit etc.
5 (attrib.) irresistibly tempting.
6 an eel-shaped tailed amphibian of the family Sirenidae.
Phrases and idioms:
siren suit a one-piece garment for the whole body, easily put on or taken off, orig. for use in air-raid shelters.
Etymology: ME f. OF sereine, sirene f. LL Sirena fem. f. L f. Gk Seiren