Siren (7)
'siren' is the definition.
(Lorelei is an example)
This is all the clue.
(Other definitions for lorelei that I've seen before include "A dangerously attractive lady" , "Rhine Rock where sirens once dwelled" , "Twenty down siren nymph; lie role (anag.)" , "Legendary siren luring Rhine boatmen to destruction" , "Rhine rock of siren legend" .)
'siren' is the definition.
(synonyms)
This is the entire clue.
(Other definitions for temptress that I've seen before include "seductive type" , "Delilah" , "Femme fatale" , "Alluring woman" , "Enticing female" .)