Crossword Genius

Underground venue changing poles for street performer (6)

Ross

I believe the answer is:

busker

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'for street performer' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

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(Other definitions for busker that I've seen before include "Public entertainer" , "Street entertainer" , "Street performer" , "Street musician" , "player in street" .)

I've seen this clue in The Independent.
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