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1.
The weed you find when you open up a roach.
Man I just smoked some weedums from the rest of that spliff from yesterday.
by ViralFrost January 08, 2012
 
2.
slang for the flowering bud of the cannabis plant, perpetuated by the ending "ums" after the common 90's era slang term, "weed".
Listen dilly dawg, if you don't pass that weedums over here already i'm going to tell everyone what you tried to put in my mouth last night!
by thedopeman June 11, 2008