Reportedly annoy the Crown? (4)

I believe the answer is:

peak

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'the crown?' is the definition.
(crown is a kind of peak)

I don't understand the remainder of the clue.

(Other definitions for peak that I've seen before include "Pointed mountain" , "Summit, often pointed" , "Acme" , "Pinnacle" , "Mountain top" .)

I've seen this clue in The Times.

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