Cocytus Cocytean • cod · · · Info · Definitions · Characters · · Cocytus · · Text Latin · · Script 7 · · Length Definitions · · · (noun) (Greek mythology) a river in Hades that was said to be a tributary of the Acheron. Synonyms: River Cocytus. · · Noun Definition 1 Characters · · C latin capital letter c U+0043 c latin small letter c U+0063 o latin small letter o U+006F s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 y latin small letter y U+0079