"Our Thing" or "This Thing Of Ours". The real name for the Mafia. Cosa Nostra is a crime sydicate that began in Sicily in the mid nineteenth century. A "Made Man" is a man that has become a member of Cosa Nostra. According to original Cosa Nostra rules, you had to be of Sicilian descent to be a member, you couldn't have a close relative that was a police officer, etc. Many political leaders have been murdered by Cosa Nostra.
Kiss the Don's ring or die. This is Cosa Nostra.
by Fear The Stiletto August 17, 2011
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The Sicilian Mafia, often known as simply the Mafia and referred to by its own members as Cosa Nostra, is an organized crime syndicate in Sicily, Italy.

they shit on every fucking gang in buk with a 12-0 war streak, never lost a war from the day they were founded until now (founded 2018)
Cosa Nostra just molotoved Downing Street and took over
by aegis dog January 13, 2020
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Italian for either "This thing of ours" or "Our Thing" depending on who's translating. Used as a euphemism for the Italian mafia.
Once you're in La Cosa Nostra, you can't get out.
by Jimmy February 6, 2005
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the name for mainly the american mafia, also other offshore italian based mafia organizations, aswell as the huddersfield mafia in england known as the tetsuo family.
the tetsuo family / genovese family are examples of la cosa nostra.
by ntfx April 3, 2003
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