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1.
A combination of marijuana, hash, and kief all in one bowl.
Weed mixed with hash mixed with kief believe this, it's heedish...

I was so blazed after we smoked that heedish bowl last night.
by Dr. Sour Diesel January 13, 2006
 
2.
a person who once had a big head but grew into his body. he sometimes pretends he is a super hero as well.
Damn heedish, your head doesn't look that big when you wear your superhero cape!
by Lynne Lucia February 21, 2011