Debut made by crossword clue solver? (5)

I believe the answer is:

entry

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'debut' is the definition.
(I know that debut can be written as entry)

I cannot understand how the remainder of the clue works.

(Other definitions for entry that I've seen before include "Door; appearance" , "contestant" , "Admittance" , "Opening" , "candidate" .)

I've seen this clue in The Guardian.

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