Green’s Dictionary of Slang

1. a marijuana cigarette; marijuana [abbr. SE marijuana].

1940		R. Chandler Farewell, My Lovely (1949) 66: I knew a guy once who smoked jujus [...] Three highballs and three sticks of tea and it took a pipe wrench to get him off the chandelier.
1953		Anslinger & Tompkins Traffic In Narcotics 311: ju-ju. A marihuana cigarette.
2004		T. Dorsey Cadillac Beach 189: ‘It’s about Serge.’ ‘Regular wiseguy. Didn’t dance straight. Ran with a wrong-number dizzy for the juju.’.
2019		Headie One ‘Rubbery Bandz’ 🎵 I told my shawty all I do is rap / Why they think I took a visit to the juju man?

2. attrib. use of sense 1.

1969

Lennon & McCartney ‘Come Together’ 🎵 Here come old flattop he come grooving up slowly / He got joo-joo eyeball he one holy roller.

3. any drugs in capsule form.

1980		E. Folb Runnin’ Down Some Lines 168: Other expressions likened Seconal to ‘candy’ [...] – M & Ms, gum drops, ju jus.
2002		‘Touré’ Portable Promised Land (ms.) 156: We Words (My Favorite Things) [...] Po-po. Steelo. Juju.