Top Definition
Contrary to someone's beliefs, this is not too common a misspelling. More people spell it 'caffiene' compared to 'caffeiene', where the ratio is about Several Thousand : 1.

See caffeine, foo'.
No, you fail. Go to caffeine.
by CaffeineLounge May 04, 2005
a common misspelling for caffeine.
> Dude, I need some caffeiene.

> **caffeine.
by ReincarnationOfFoxes April 29, 2005
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