adjective

(of alcoholic drink or a recording) made, distributed, or sold illegally.

bootleg cassettes

illegal,illicit,unlawful,unauthorized,unsanctioned,unlicensed,unofficial,pirated,bootlegged,contraband,smuggled,black-market,under the counter

verb

make, distribute, or sell (alcoholic drink or a recording) illegally.

he amassed a fortune bootlegging whisky

illegal,illicit,unlawful,unauthorized,unsanctioned,unlicensed,unofficial,pirated,bootlegged,contraband,smuggled,black-market,under the counter

noun

an illegal musical recording, especially one made at a concert.