Wild goats in a capital city (8)
I believe the answer is:
santiago
'capital city' is the definition.
(Santiago is the capital of Chile)
'wild goats in a' is the wordplay.
'wild' is an anagram indicator.
'goats'+'in'+'a'='goatsina'
'goatsina' with letters rearranged gives 'SANTIAGO'.
(Other definitions for santiago that I've seen before include "Chilean capital" , "Chile's capital" , "South American capital" , "Capital of Chile" , "City" .)