Nurtured loud editor (3)
I believe the answer is:
fed
'nurtured' is the definition.
(I've seen this in another clue)
'loud editor' is the wordplay.
'loud' becomes 'f' (short for forte - 'loud' in music).
'editor' becomes 'ed' (abbreviation).
'f'+'ed'='FED'
(Other definitions for fed that I've seen before include "Given sustenance" , "American cop" , "Given food to eat" , "Banking authority" , "Gave food to (someone)" .)