Prophet very old woman recalled (4)
I believe the answer is:
amos
'prophet' is the definition.
(biblical prophet)
'very old woman recalled' is the wordplay.
'very' becomes 'so' (both can mean 'extremely').
'old woman' becomes 'ma' (both can mean someone's mother).
'recalled' shows that the letters should be reversed in order (to recall can mean to bring something back).
'so'+'ma'='soma'
'soma' reversed gives 'AMOS'.
(Other definitions for amos that I've seen before include "Prophet in the Bible" , "Hebrew prophet" , "American wild dog" , "Old Testament prophet" , "Part of bible" .)