butterbur butterbump • butterbush · · · Info · Definitions · Synonyms · Characters · · butterbur · · Text Latin · · Script 9 · · Length 3 · · Syllables Definitions · · · (noun) small Eurasian herb having broad leaves and lilac-pink rayless flowers; found in moist areas. Synonyms: bog rhubarb, Petasites hybridus, Petasites vulgaris. · · Noun Definition 1 Synonyms · · · bog rhubarb · · Synonym 1 petasites hybridus · · Synonym 2 petasites vulgaris · · Synonym 3 Characters · · b latin small letter b U+0062 e latin small letter e U+0065 r latin small letter r U+0072 t latin small letter t U+0074 u latin small letter u U+0075