Talk too much of careless carnage (3)
I believe the answer is:
nag
'talk too much' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'of careless carnage' is the wordplay.
'of' indicates the answer is hidden within the clue.
'NAG' is hidden in the letters of 'careless carnage'.
Can you help me to learn more?
(Other definitions for nag that I've seen before include "Mount" , "(Of pain) ache dully; horse (colloq.)" , "Find fault" , "Harry" , "Annoy the old horse persistently" .)