Ricinus ricinus • ricinus communis · · · 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: genus Ricinus. · · Noun Definition 1 Characters · · R latin capital letter r U+0052 c latin small letter c U+0063 i latin small letter i U+0069 n latin small letter n U+006E s latin small letter s U+0073 u latin small letter u U+0075