rhein Rheiformes • rheinic · · · Info · Definitions · Characters · · rhein · · Text Latin · · Script 5 · · Length Definitions · · · (noun) a major European river carrying more traffic than any other river in the world; flows into the North Sea. Synonyms: Rhine, Rhine River, Rhein. · · Noun Definition 1 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072