Madame Curie's hometown (6)
I believe the answer is:
warsaw
'madame curie's hometown' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for warsaw that I've seen before include "1929 international agreement regulating commercial air transport" , "Polish capital" , "Largest city in Poland" , "Capital city of Poland" , "Poland's largest city" .)