Crossword Genius

Gaps in entireties, we hear (5)

Ross

I believe the answer is:

holes

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'gaps' is the definition.
(I know this)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for holes that I've seen before include "Apertures" , "Openings" , "Scrapes" , "Empty spaces" , "Cavities" .)

I've seen this clue in The Daily Express.
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