Video shows what capo di tutti capi means. Boss of all the bosses, especially in the mafia, cosa nostra etc. Often used by law enforcement, the media and the public in general to describe a Mafia boss who exerts significant influence on how the Mafia should run.. Capo di tutti capi Meaning. How to pronounce, definition audio dictionary. How to say capo di tutti capi. Powered by MaryTTS, Wiktionary