Cliff Wilde, perhaps not the first (4)
I believe the answer is:
scar
'cliff' is the definition.
(I've seen this in another clue)
'wilde perhaps not the first' is the wordplay.
'wilde perhaps' becomes 'Oscar' (playwright Oscar Wilde).
'not the first' means to remove the first letter.
'oscar' with its first letter taken off is 'SCAR'.
(Other definitions for scar that I've seen before include "Evidence of a past injury?" , "Indication of damage" , "Remains of a wound" , "fall could possibly be the reason for one" , "Leave wound mark" .)