Bishop entertained by a European circus performer (7)
I believe the answer is:
acrobat
'circus performer' is the definition.
(type of performing gymnast)
'bishop entertained by a european' is the wordplay.
'bishop' becomes 'B' (chess abbreviation).
'entertained by' is an insertion indicator (inserted letters are hosted or entertained).
'european' becomes 'croat' (person from Croatia).
'a'+'croat'='acroat'
'b' put into 'acroat' is 'ACROBAT'.
(Other definitions for acrobat that I've seen before include "Circus star" , "Circus gymnast" , "Circus athlete" , "Rope-dancer" , "Performer of great agility and coordination" .)