Small cut or notch (4)
I believe the answer is:
nick
I believe this clue is a double definition.
'small cut' is the first definition.
(I've seen this before)
'notch' is the second definition.
(I know that notch can be written as nick)
(Other definitions for nick that I've seen before include "Lift" , "Take" , "Catch" , "Minor injury" , "Slight cut" .)