ricinus Ricinulei • Ricinus · · · Info · Definitions · Characters · · ricinus · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) a genus of herb having only one known species: castor-oil plant. Synonyms: Ricinus, genus Ricinus. · · Noun Definition 1 Characters · · c latin small letter c U+0063 i latin small letter i U+0069 n latin small letter n U+006E r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075