Claps carelessly on one’s head! (5)

I believe the answer is:

scalp

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'one's head' is the definition.
'scalp' can be an answer for 'head' (thesaurus). I am unsure of the 'one's' bit.

'claps carelessly' is the wordplay.
'carelessly' is an anagram indicator.
'claps' anagrammed gives 'SCALP'.

'on' is the link.

Can you help me to learn more?

(Other definitions for scalp that I've seen before include "wants to resell theatre tickets" , "Track, way" , "Hair producer" , "Token of victory" , "Cut hair very short" .)

I've seen this clue in the Evening Standard.

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