Green’s Dictionary of Slang

(US drugs) marijuana.

1992		Redman ‘How to Roll a Blunt’ 🎵 First of all, you get a fat bag of ism.
1997		Eble Campus Sl. Fall 4: izm – marijuana [...] ‘Let me get a hit of that izm.’.
1995		Channel Live ‘Mad Izm’ 🎵 The izm brings the wisdom when I kick it on the rhythm.
2001		Da Smokehouse Marijuana Gloss. 🌐 izm [us] – cannabis.
2002		‘Touré’ Portable Promised Land (ms.) 155: We Words (My Favorite Things) [...] Boom. Buddha. Reefer. Ism. Indo. Lah. Trees.
2012		Rock Mecca ‘Alone Out There’ 🎵 Spark your izm and embark on this expedition.