Bobby's old-fashioned peeler, perhaps? (6)

I believe the answer is:

robert

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'bobby's' is the definition.
Both the definition and answer are singular nouns.
Perhaps there's an association between them I don't understand?

I don't understand how the rest of the clue works.

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(Other definitions for robert that I've seen before include "Founder of London's police force" , "Name of three Scottish kings" , "-- Browning, English poet" , "- Browning, Eng. poet" , "See 22" .)

I've seen this clue in the Evening Standard.

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