What is mafia definition?

The mafia is a criminal organization that originated in Italy and has existed for over a century. It is also known as the Cosa Nostra, which means "our thing." The mafia is known for operating in a hierarchical and secretive fashion, with its members adhering to a strict code of conduct and engaging in illegal activities such as extortion, racketeering, and money laundering. The organization is structured into families or clans, with each clan having a boss who oversees its activities. The mafia has also extended its reach beyond Italy and has established branches in other parts of the world, including the United States.