rum-runner noun an importer, transporter and/or purveyor of illegal alcohol, especially rum US,1920
According to Carroll Mealy, capable and efficient head of the Alcoholic Tax Unit, the rum-runners take this stuff to Washington in 1940 Fords, with Cadillac or racing motors in place of original power. — Jack Lait and Lee Mortimer, WashingtonConfidential, p. 130, 1951