Green’s Dictionary of Slang

(drugs) heroin.

1938		Duke Ellington [instrumental] Old King Dooji.
1965		C. Brown Manchild in the Promised Land (1969) 195: Harlem had changed a lot [...] I knew it had a lot to do with duji, heroin.
1967		P. Thomas Down These Mean Streets (1970) 200: Yet there is something about dogie — heroin — it’s a super-duper tranquilizer.
1970		J. Conaway Big Easy 127: I mean smack. Horse, honch, duji, H, snow, heroin — it’s all the same animal.
1971		E.E. Landy Underground Dict. (1972) 68: dogie [...] dojee [...] dojie n. Heroin. [Ibid.] 69: dojee [...] doojer [...] dooji.
1972		Smith & Gay Heroin in Perspective 201: Dugee. Heroin.
1978		H. Selby Jr Requiem for a Dream (1987) 245: There be one place you can stash ol doogie without you worryin about it.
1981		D.E. Miller Bk of Jargon 337: doojee: Heroin.
2001		ONDCP Street Terms 8: Dogie [...] Doogie/doojee/dugie [...] Duji — Heroin.
2010		K. Richards Life 247: I was taking heroin by this time. [Gram Parsons] wasn’t unfamiliar with it. ‘Doodgy’ was his word for it.