High point that turns up in rotation (3)

I believe the answer is:

tor

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'high point' is the definition.
(a tor is a rocky hill)

I don't understand the remainder of the clue.

(Other definitions for tor that I've seen before include "Feature of Dartmoor" , "Rocky prominence" , "(Dartmoor) rocky hill" , "fell" , "Rot on rocky peak" .)

I've seen this clue in the Evening Standard.

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