Green’s Dictionary of Slang

1. (drugs) marijuana, a marijuana cigarette.

1944		D. Burley Orig. Hbk of Harlem Jive 105: The fools are over-sporting themselves, stacking the birdwood before me like country boys piling logs.
1960, 1975		Wentworth & Flexner DAS.

2. a cigarette.

1953

Berrey & Van den Bark Amer. Thes. Sl. (2nd edn).