Avenge the destruction of a city (6)
I believe the answer is:
geneva
'a city' is the definition.
(Geneva is an example)
'avenge the destruction' is the wordplay.
'avenge' can be anagrammed to 'GENEVA'.
But, I am not clear how this is indicated.
'of' is the link.
Can you help me to learn more?
(Other definitions for geneva that I've seen before include "Calvin's city" , "Swiss city/lake" , "Avenge in Swiss city" , "city of biblical significance" , "Some bands" .)