Tears out a flower (5)
I believe the answer is:
aster
'a flower' is the definition.
(type of flower)
'tears out' is the wordplay.
'out' indicates an anagram (out can mean wrong or inaccurate).
'tears' with letters rearranged gives 'ASTER'.
(Other definitions for aster that I've seen before include "Showy garden flower" , "Large daisy" , "It grows" , "Flower of the daisy family - rates (anag)" , "Stare (anag.)" .)