Well-balanced person (7)
I believe the answer is:
acrobat
'well-balanced person' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for acrobat that I've seen before include "Agile entertainer" , "Spectacular gymnast" , "Circus entertainer" , "Rope-dancer" , "Gymnastic entertainer" .)