European girl breaking in (7)
I believe the answer is:
italian
'european' is the definition.
(I know that Italian is a type of european)
'girl breaking in' is the wordplay.
'girl' becomes 'talia' ().
'breaking' indicates putting letters inside.
'talia' placed within 'in' is 'ITALIAN'.
(Other definitions for italian that I've seen before include "I, a Latin may be a Roman" , "Eg, Native of Turin" , "Nationality of Giuseppe or Lorenzo" , ", I can appear volatile" , "A film was made about such a job" .)