Damage after cold spell (5)
I believe the answer is:
charm
'spell' is the definition.
(I've seen this before)
'damage after cold' is the wordplay.
'damage' becomes 'harm' (synonyms).
'after' is a charade indicator (letters next to each other).
'cold' becomes 'c' (eg on taps).
'harm' after 'c' is 'CHARM'.
(Other definitions for charm that I've seen before include "Attractive manner" , "pleasing feature" , "Trinket on a bracelet" , "Bracelet ornament" , "Group of finches" .)