Man's highest state? (5)

I believe the answer is:

tibet

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'state?' is the definition.
(Tibet is an example)

I don't understand how the remainder of the clue works.

(Other definitions for tibet that I've seen before include "Nepal''s neighbour" , "Home country of the Dalai Lama (5)" , "hilly region" , "Mountainous Asian region" , "High place" .)

I've seen this clue in The Globe and Mail.

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