Cliff Wilde's leaving capital (4)
I believe the answer is:
scar
'cliff' is the definition.
(I've seen this before)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for scar that I've seen before include "Craggy outcrop" , "Evidence of an old wound" , "Bare rocky cliff - injury" , "Limestone cliff or outcrop" , "Trace of an old injury" .)