It brings a guy down to earth (4-3)

I believe the answer is:

tent-peg

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'it' is the definition.
I don't know anything about this answer so I can't tell whether it can be defined by this definition.

'a guy down to earth' is the wordplay.
'a guy' becomes 'tent' (I've seen this before).
'down to earth' becomes 'peg' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'tent'+'peg'='TENT-PEG'

'brings' is the link.

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