Green’s Dictionary of Slang

(US black) a large and potent marijuana cigarette, laced with cocaine.

1989		(con. 1982–6) T. Williams Cocaine Kids (1990) 110: Others prefer a bazuca, in which the drug is sprinkled on cigarettes or joints and smoked.
1992		T. Williams Crackhouse 74: The kids in my old block used to soak Bambu paper with the con-con, roll a cigarette and smoke it, and call that bazuca. Now they do something quite different. They mix dope [heroin] and crack in the pipe.