Are better than the other polishes? (8)

I believe the answer is:

outshine

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'are better' is the definition.
(I've seen this before)

I don't understand the remainder of the clue.

(Other definitions for outshine that I've seen before include "Excel - dazzle" , "beat" , "Be much better than" , "give more light, paradoxically" , "Eclipse" .)

I've seen this clue in the Evening Standard.

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