a river of Germany (Polybius); now the Eder, rising on the borders of the county of Naf- fau, to the north-east of, and not far from Dillenburg, running through the landgraviate of Hesse, the county of Waldeck, by Fritzlar, and then again through the landgraviate, and, together with the Fulda, falling into the Weser, to the south of, and not far from Cassel.