Tag emu running over a large American country (9)
I believe the answer is:
guatemala
'country' is the definition.
(Guatemala is an example)
'tag emu running over a large american' is the wordplay.
'running' indicates an anagram.
'over' says to put letters next to each other.
'large' becomes 'l'.
'american' becomes 'a' (common abbreviation - e.g. in organisation names).
'tag'+'emu'='tagemu'
'tagemu' anagrammed gives 'guatem'.
'guatem'+'a'+'l'+'a'='GUATEMALA'
(Other definitions for guatemala that I've seen before include "country south of the USA" , "Central American country" , "Republic in Central America" , "place overseas" , "Central American state" .)