rubia : Idioms & Phrases
genus rubia
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noun type genus of the Rubiaceae; Old World herbs and subshrubs grown for their medicinal properties and for dye substances extracted from their roots
Rubia.
WordNet
rubia cordifolia
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noun perennial East Indian creeping or climbing herb used for dye in the orient
Indian madder; munjeet.
WordNet
rubia tinctorum
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noun Eurasian herb having small yellow flowers and red roots formerly an important source of the dye alizarin
madder.