Study a country girl (7)
I believe the answer is:
perusal
'study' is the definition.
(thesaurus)
'a country girl' is the wordplay.
'a country' becomes 'peru' (Peru is an example).
'girl' becomes 'sal' (feminine given name**).
'peru'+'sal'='PERUSAL'
(Other definitions for perusal that I've seen before include "Inspection" , "worth a close look" , "Process of examination" , "Examination, survey" , "Reading, examination" .)