Crossword Genius

Cliff shows where he was hurt (4)

Ross

I believe the answer is:

scar

I'm a little stuck... Click here to teach me more about this clue!

'cliff' is the definition.
(I've seen this before)

'where he was hurt' is the wordplay.
I cannot really see how this works, but
'he' could be 'car' and 'car' is found in the answer.
A single letter 's' remains which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).

'shows' is the link.

Can you help me to learn more?

(Other definitions for scar that I've seen before include "Remnant of wound" , "area of wound" , "Stigma" , "reminder of sword-fight?" , "Disfigure(ment)" .)

I've seen this clue in The Globe and Mail.
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