Top Definition
A race of giant spiders that inhabits the Forbidden Forest located outside of Hogwarts in the book Harry Potter. The first acromantula, Aragog, was brought to the forest by Hagrid during his stay as a student at Hogwarts.
Professor Slughorn happily drained the poison from the tentacles of the acromantula.
by Tiek00n December 20, 2005
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