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2.
An extremely dry vagina.
"Good night last night? Did you end up hooking up with her?"

"Yeah, but I'm paying for it today cuz I couldn't find any lube. Her pussy was like a geode... my dick is so raw I can't even walk."
by dj-ro August 09, 2008
 
1.
Weed that looks fairly average in appearance but, when broken up, reveals heavy crystals and other signs of dankness.
"This weed looks pretty mediocre man."
"I know bro, but its a real geode."

"Dude I got this sack and thought it was mids, but it ended up being mad dank. Shit's geode."
by Aknibeezy July 31, 2008