A Corsican criminal organization operating in France and elsewhere.
The Union Corse is particularly associated with the smuggling of heroin from Marseilles to New York between the 1930s and the 1970s.
1960s; earliest use found in Ian Fleming (1908–1964), writer. From French Union Corse, lit. ‘Corsican Union’, the name in of this criminal organization from union + Corse Corsican.