Eleventyone is the word used by Hobbits in JRR Tolkein's books for another Hobbits age when he/she becomes 111 years old.

This word was picked up by games and internet forum goers who try to act cooler than other gamers and internet forum goers, though usually they aren't. Eleventyone seems to have spawned other uses for the "Eleventy" prefix.
Bilbo Baggins played a trick on the guests at his birthday when he was eleventyone by putting on his magic ring and vanishing.
by Toolstyle February 7, 2006
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one hundred and eleven (111)

also used when taking the piss out of leet kiddies
0mg PL m3 plz!!!111eleventyone!!
by Empath July 9, 2005
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