"metal tube rocket launcher," 1942, from name of a junkyard musical instrument used (c.1935) as a prop by U.S. comedian Bob Burns (1896-1956); extension of bazoo, slang for "mouth" or "boastful talk" (1877), probably from Dutch bazuin "trumpet."
A marijuana cigarette impregnated with bazuco, a cheap cocaine paste
[1980s+ Narcotics; fr Sp bazuco, ''bazooka'']
[1990s+; first sense fr its resemblance to a tubular musical instrument played by the 1940s comedian Bob Burns, who invented and named it in 1905]