Geryon (jĕrˈēən, jərĭˈən) [key], in Greek mythology, three-bodied monster who, with his dog Orthrus, watched over a great herd of cattle. He and Orthrus were killed by Hercules when, as his 10th labor, he stole the cattle.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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