Young creature biting a woman’s innocent child (6)
I believe the answer is:
cherub
'innocent child' is the definition.
(I've seen this before)
'young creature biting a woman's' is the wordplay.
'young creature' becomes 'cub' (eg bear cub).
'biting' is an insertion indicator (some letters bite or swallow others).
'a woman's' becomes 'her' (belonging to a woman).
'cub' placed around 'her' is 'CHERUB'.
(Other definitions for cherub that I've seen before include "little one with wings" , "Sweet, innocent child" , "Angelic infant" , "Lovely child" , "A heavenly baby" .)