Surgery reminder in Christmas card (4)

I believe the answer is:

scar

'surgery reminder' is the definition.
(I've seen this in another clue)

'in christmas card' is the wordplay.
'in' indicates a hidden word.
'SCAR' is hidden in the letters of 'christmas card'.

(Other definitions for scar that I've seen before include "evidence of damage" , "Skin blemish - bare crag" , "Old-wound mark" , "Mark left by old wound" , "Fish" .)

I've seen this clue in The Sunday Times.

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