Florentine girl breaking in (7)
I believe the answer is:
italian
'florentine' is the definition.
Both the definition and answer are adjectives. Perhaps you can see a link between them that I can't see?
'girl breaking in' is the wordplay.
'girl' becomes 'talia' ().
'breaking' means one lot of letters goes inside another.
'talia' placed within 'in' is 'ITALIAN'.
Can you help me to learn more?
(Other definitions for italian that I've seen before include "Mixed with gin" , "Mediterranean language" , "Native of Sicily, say" , "Eg, native of Milan" , "A Latin I know from Rome, say" .)