Wild and free in capital (6)
I believe the answer is:
madrid
'capital' is the definition.
(capital of Spain)
'wild and free' is the wordplay.
'wild' becomes 'mad' (similar in meaning).
'and' says to put letters next to each other.
'free' becomes 'rid' (to be free of something is to be rid of it).
'mad'+'rid'='MADRID'
'in' is the link.
(Other definitions for madrid that I've seen before include "Spanish city" , "European capital city" , "City with the Prado national art gallery" , "Capital of Spain since 1561" , "Spain's capital" .)