Crossword Genius

Wind-up merchants in playground serve nuts around one (9)

Ross

I believe the answer is:

receivers

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'wind-up merchants' is the definition.
I can't judge whether this definition defines the answer.

'playground serve nuts around one' is the wordplay.
'playground' becomes 'rec' (short for recreation ground).
'nuts' indicates an anagram (nuts can mean crazy).
'around' means one lot of letters goes inside another.
'one' becomes 'i' (Roman numeral).
'serve' is an anagram of 'evers'.
'evers' going around 'i' is 'eivers'.
'rec'+'eivers'='RECEIVERS'

'in' is the link.

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