Crossword Genius

Unwound broadcast after change of axis (7)

Ross

I believe the answer is:

relaxed

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'unwound' is the definition.
('relax' can be a synonym of 'unwind')

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

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(Other definitions for relaxed that I've seen before include "Slackened" , "Easy-going" , "Laid back" , "Took it easy, loosened up" , "Unstressed" .)

I've seen this clue in The Telegraph.
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