Lure of some authentic enchantress (6)
I believe the answer is:
entice
'lure' is the definition.
('entice' can be a synonym of 'lure')
'some authentic enchantress' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'ENTICE' is hidden in the letters of 'authentic enchantress'.
'of' acts as a link.
(Other definitions for entice that I've seen before include "Lure, inveigle" , "Attract or persuade with offer" , "Attract with offers" , "draw" , "Tempt with inducement" .)