Crossword Genius

It keeps the openers around (3,4)

Ross

I believe the answer is:

key ring

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'it keeps the openers around' is the definition.
The definition suggests a singular noun which matches the answer.

This is all the clue.

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(Other definitions for key ring that I've seen before include "place for lockers" , "What may carry a fob" , "Gaoler's holder" , "Grey ink (anag)" , "a lot may hang on it" .)

I've seen this clue in the Evening Standard.
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