City fox might be this! (6)
I believe the answer is:
athens
'city' is the definition.
(Athens is an example)
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for athens that I've seen before include "Mediterranean capital" , "Tan she got in Greece" , "6 capital" , "European capital city" , "Hasten to the Hellenic city" .)