The term 'Major Mafioso' refers to a high-ranking member of the Mafia, typically a CAPO (4 letters). A CAPO is a leader of a Mafia family and is responsible for supervising the activities of the family's members. They are also responsible for collecting money from the family's members and distributing it among the higher-ranking members. The CAPO is the highest-ranking member of the family and is usually the one who makes the final decisions.