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2.
The biggest number there is; the most; used when something is extreme; used in over-exaggeration
I got stopped at eleventy billion red lights on the way here.
by Jenga650 August 26, 2006
 
1.
A made up number Keanu Reeves decided to bet for Final Jeopardy.
"I bet eleventy billion dollars."
"That's not even a real number"
"Yet!"
by Trebek December 30, 2003
 
3.
Something used to Express Serious examples
I told Coolnick eleventy billion times that he is a faggot and didn't make the word up!
by Woofers June 18, 2008
 
4.
the most kick ass number on this planet
either you give me eleventy billion dollars or i'll fuck you to mars
by moop February 03, 2004