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1.
Geem is a word used by geeks to describe something they are excited about.
I am Geeming over the new artist on Batman.
by Lousy Rat Bastard December 09, 2004
 
2.
This word can be used to replace gum in certain instances, and was used first by Neil Mihelich as part of his own language.
Do you have any geem?

I sure do love this new geem.
by FustKuck November 12, 2007
 
3.
someone that is uncool, slow, weird etc
e.g. don't be such a geem.. as you might say 'don't be such a freak'
by XXMRMCCONEXX February 24, 2010