Gatekeeper won't begin to show the way in (5)

I believe the answer is:

entry

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

I cannot understand how the rest of the clue works.

(Other definitions for entry that I've seen before include "Gate" , "Opening" , "Ingress, portal" , "Access point" , "Way in; item in list" .)

I've seen this clue in The Guardian.

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