Top Definition
A large bird that lays eggs inside the sphincter of its enemies. Generally takes the middle area of its habitat. Some say the Syllfean only comes out at night but has been seen in during the day searching for prey. The Syllfean enjoys the cold weather and uses its large wings to create icy winds.
Run Austin, the Syllfean is going to lay its eggs inside your poop hole!
by JoeyLow July 03, 2013
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