Fenya

Fenya (Russian: феня, IPA: [ˈfʲenʲə]) or fen'ka (Russian: фенька, IPA: [ˈfʲenʲkə]) is a Russian cant language originated among the travelling peddlers and currently used in the Russian criminal underworld and among former detainees of Russian penal establishments ("prison slang"). In modern Russian language it is also referred to as blatnoy language (Russian: блатной язык), where "blatnoy" is a slang expression for "professional criminal". It is also widely used in "thieves' songs" (Russian: "blatnaya pesnya").