Crossword Genius

Twist arm, almost (7)

Ross

I believe the answer is:

revolve

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'twist' is the definition.
(thesaurus)

I cannot understand how the remainder of the clue works.

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(Other definitions for revolve that I've seen before include "Turn round" , "stage feature" , "Turn around" , "Pirouette" , "Rotate" .)

I've seen this clue in The Telegraph.
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