I. noun
an enticingly attractive woman who lures men into dangerous or compromising situations
a slinky siren of the silent screen era
Synonyms: femme fatale, Lorelei, seductress, temptress
Related Word: charmer, vamp
II. adjective
Synonyms: attractive 1, alluring, attracting, bewitching, captivating, drawing, enchanting, fascinating, magnetic, seductive
Related Word: sirenic