Twigs handled in the park, perhaps (5)

I believe the answer is:

besom

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'park perhaps' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see a link between them that I can't see?

I can't explain the rest of the clue.

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(Other definitions for besom that I've seen before include "Concoction of twigs" , "cleaner?" , "Lazy woman" , "I sweep" , "Twiggy broom" .)

I've seen this clue in the Evening Standard.

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