Pronunciation: (ô-res'tēz, ō-res'-),[key] —n. 1. Class. Myth.the son of Agamemnon and Clytemnestra, and the brother of Electra and Iphigenia: he avenged the murder of Agamemnon by killing Clytemenestra and her lover, Aegisthus, then was pursued by the Furies until saved by Athena.
2. (italics) a tragedy (408 b.c.) by Euripides.