Grind a new bread (6)
I believe the answer is:
abrade
'grind' is the definition.
(I've seen this in another clue)
'a new bread' is the wordplay.
'new' indicates anagramming the letters.
'bread' anagrammed gives 'brade'.
'a'+'brade'='ABRADE'
(Other definitions for abrade that I've seen before include "Rub off or scrape away" , "A beard (anag.)" , "Wear away by rubbing, scrape" , "Wear away by erosion" , "Chafe" .)