Crossword Genius

Leading performer you can't see any day (4)

Ross

I believe the answer is:

star

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'leading performer' is the definition.
(I've seen this in another clue)

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

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(Other definitions for star that I've seen before include "White blaze on a horse's forehead" , "Distant sun" , "Major" , "Five-pointed celestial body" , "Hollywood figure" .)

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