What is capo di tutti capi meaning?

Capo di tutti capi is an Italian phrase that means "boss of all bosses" or "boss of bosses". It refers to the top leader or the highest authority figure in a criminal organization or a mafia group. The term is often associated with the Italian-American Mafia or Cosa Nostra, where the capo di tutti capi holds complete control over all the other bosses and decides on all important matters. The concept of the capo di tutti capi is also seen in other organized crime groups, such as the Sicilian Mafia and the Russian Mafia. However, the position is highly secretive and not openly acknowledged by the criminal organizations.