Violated truce about World Cup hairstyle (7)

I believe the answer is:

crewcut

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

'violated truce about world cup' is the wordplay.
'violated' is an anagram indicator (letters violated or damaged).
'about' is an insertion indicator.
'world cup' becomes 'wc' (this could be a standard abbreviation which I don't know about).
'truce' anagrammed gives 'creut'.
'creut' enclosing 'wc' is 'CREWCUT'.

Can you help me to learn more?

(Another definition for crewcut that I've seen is " Closely cropped hairstyle".)

I've seen this clue in the Sydney Morning Herald.

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