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A term used to define someone who is near the level of sage (think old man, not plant) when it comes to knowledge on all thinks utterly useless. They don't really know much of anything considered useful, but they can really come in use at the strangest times.
Jeez, that guy seems to only know pointless things! He's a total Eilyx!
by MikuMeister June 07, 2018
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