la cosa nostra

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

La Cosa Nostra

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