Kiss of death from Bambi, maybe defining animated story (9)
I believe the answer is:
destroyer
'kiss of death' is the definition.
(that which destroys or kills)
'bambi maybe defining animated story' is the wordplay.
'bambi maybe' becomes 'deer' (deer in the Disney film Bambi).
'defining' means one lot of letters goes inside another (define can mean to mark a boundary around).
'animated' indicates anagramming the letters.
'story' anagrammed gives 'stroy'.
'deer' placed around 'stroy' is 'DESTROYER'.
'from' acts as a link.
(Other definitions for destroyer that I've seen before include "Ravager" , "Butcher'" , "Red oyster (anag)" , "Naval vessel" , "Saboteur" .)