Cuts? Nothing's been mentioned (5)
I believe the answer is:
nicks
'cuts?' is the definition.
(nick is a kind of cut)
'nothing's been mentioned' is the wordplay.
'nothing' becomes 'nix' (nix can mean nothing).
'been mentioned' shows a homophone (sound like).
'nix' sounds like 'NICKS'.
(Other definitions for nicks that I've seen before include "Pinches (slang)" , "Small cuts" , "Slangily steals or notches" , "Arrests (slang)" , "Pinches or makes a small cut" .)