Cut medic mentioned (4)
I believe the answer is:
dock
'cut' is the definition.
(I know that dock is a more specific form of the action cut)
'medic mentioned' is the wordplay.
'medic' becomes 'doc' (doctor).
'mentioned' indicates a 'sounds like' (homophone) clue.
'doc' is a homophone of 'DOCK'.
(Other definitions for dock that I've seen before include "area of court" , "Where the accused is placed in court" , "pier" , "Where one might repair cutter" , "Use this for nettle stings" .)