Notorious gangster's international debut? (6)
I believe the answer is:
capone
'notorious gangster's' is the definition.
'capone' can be an answer for 'gangster's' (Al Capone). I'm not sure about the 'notorious' bit.
'international debut?' is the wordplay.
'international' becomes 'cap' (sportsperson who competes internationally).
'debut?' becomes 'one' (I can't justify this - if you can you should believe this answer much more).
'cap'+'one'='CAPONE'
Can you help me to learn more?
(Other definitions for capone that I've seen before include "Mountain said to be resting place of Noah's Ark" , "Italian-American gangster, d. 1947" , "Hood" , "Chicago gangster, d. 1947" , "Notorious criminal" .)