Hurt by cold power of fascination (5)
I believe the answer is:
charm
'power of fascination' is the definition.
(I've seen this before)
'hurt by cold' is the wordplay.
'hurt' becomes 'harm' ('harm' can be a synonym of 'hurt'**).
'by' means one lot of letters go next to another.
'cold' becomes 'c' (eg on taps).
'harm' after 'c' is 'CHARM'.
(Other definitions for charm that I've seen before include "Spell; ornament" , "Personal attraction" , "Bracelet ornament" , "Talisman; flock of goldfinches" , "Allure" .)