コーザノストラコーザノストラMeanings1nounCosa Nostraorganization nameRefers specifically to the Sicilian Mafia; a proper noun used in contexts about organized crime.コーザノストラはシチリアを拠きょ点てんとする犯はん罪ざい組そ織しきだ。Cosa Nostra is a criminal organization based in Sicily.