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3.
A bag of marijuana, about 2 grams in weight. Used most commonly in Australia
Hey man, I'm gonna go grab a wicko, do you want one?
by Ubeek March 02, 2004
 
1.
Another name for a stick of marijuana.
About 1.5 - 2.0 grams in weight.
Costs about $20 - $25
Person 1: Yo man I'm gonna go grab a wicko later, you need one?
Person 2: Yeah I could go for a stick myself.
by JigglesMcGee April 29, 2010
 
2.
marijuana, chronic etc
im gonna go and pick up some wicko
by steveym July 26, 2007