Withdraw; graze (7)
I believe the answer is:
I believe this clue is a double definition.
'withdraw' is the first definition.
(I know that scratch is a more specific form of the action cancel)
'graze' is the second definition.
(I've seen this before)
(Other definitions for scratch that I've seen before include "Old Nick" , "Score with a sharp point" , "small injury" , "having superficial injury" , "slight injury" .)