Cliff and Mark left following injury (4)
I believe the answer is:
scar
This might be a double definition.
'cliff' is the first definition.
(I've seen this before)
'mark left following injury' is the second definition.
'scar' can be an answer for 'mark' (mark left by an injury). I am not certain of the 'left following injury' bit.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for scar that I've seen before include "Mark left by healed wound" , "Indication of damage" , "Long (for)" , "Old wound - bare cliff" , "Disfigure(ment)" .)