cirsium arvense Cirsium • cirsium discolor · · · Info · Definitions · Characters · · cirsium arvense · · Text Common · · Latin · · Scripts 15 · · Length 5 · · Syllables Definitions · · · (noun) European thistle naturalized in United States and Canada where it is a pernicious weed. Synonyms: Canada thistle, creeping thistle, Cirsium arvense. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D 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 v latin small letter v U+0076