Gr. Myth. a king of Mycenae and father of Agamemnon and Menelaus: to avenge the treachery of his brother, Thyestes, he kills Thyestes' sons and serves their flesh to him at a banquet
Origin of AtreusClassical Latin ; from Classical Greek
A king of Mycenae, brother of Thyestes and father of Agamemnon and Menelaus.