A pierrot performing in the city (8)
I believe the answer is:
pretoria
'city' is the definition.
(Pretoria is an example)
'a pierrot performing' is the wordplay.
'performing' indicates anagramming the letters.
'a'+'pierrot'='apierrot'
'apierrot' with letters rearranged gives 'PRETORIA'.
'in the' is the link.
(Other definitions for pretoria that I've seen before include "Capital city" , "A ripe rot in S. Africa" , "Pirate or a South African city, strangely" , "Executive capital of South Africa" , "City in South Africa" .)