Riþ-Bosworth & Toller Anglo-Saxon Old English Dictionary - riþ-According to the Old English Dictionary:riþ-Add :-- Wæterseáþes, ríðe cisterne, An. Ox. 498. Ríþe riui, 1413. Ríþe uenam, Scint. 224, 7.Related words: ge-ríþe. riþ-,riþ