Crossword Genius

It's rolled up for the opening (5)

Ross

I believe the answer is:

debut

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

I can't explain the remainder of the clue.

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(Other definitions for debut that I've seen before include "First appearence as of society girl" , "opening" , "Start -- launch" , "Tubed (anag.)" , "Appear in public for the first time" .)

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