Pronunciation: (ä-räs' for 1; ar'us for 2),[key] —n. 1. Ancient, Araxes. a river in SW Asia, flowing from E Turkey along part of the boundary between NW Iran and Armenia and Azerbaijan into the Kura River. ab. 660 mi. (1065 km) long.
2. Class. Myth.the first king of Phliasia.