Mark left by a healed wound (4)
I believe the answer is:
scar
'mark left by a healed wound' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for scar that I've seen before include "A bare precipice" , "area of wound" , "Disfigure(ment)" , "Mark of a wound remaining on the skin" , "sign of damage" .)