Meanings
proper noun
- The Sicilian Mafia.
Synonyms & antonyms
nouna crime syndicate in the United States; organized in families; believed to have important relations to the Sicilian Mafia
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
- SicilianCosa nostra
- EnglishCosa Nostra
Borrowed from Italian and Sicilian Cosa nostra (literally “our thing”).
More words from Sicilian
Full word history & related roots →Translations
Indonesian cosa nostra
- cosa nostraSicilian Mafia
Cite this entry
APA
Cosa Nostra. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/Cosa%20Nostra
MLA
“Cosa Nostra.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Cosa%20Nostra. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “Cosa Nostra,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/Cosa%20Nostra.
Source: Cosa Nostra on Wiktionary, CC BY-SA 4.0.