Madder \Mad"der\, n. [OE. mader, AS. m[ae]dere; akin to Icel.
ma?ra.]
(Bot.)
A plant of the Rubia (R. tinctorum). The root is much
used in dyeing red, and formerly was used in medicine. It is
cultivated in France and Holland. See Rubiaceous.
Note: Madder is sometimes used in forming pigments, as lakes,
etc., which receive their names from their colors; as.
madder yellow.
Field madder, an annual European weed (Sherardia
arvensis) resembling madder.
Indian madder, the East Indian Rubia cordifolia, used in
the East for dyeing; -- called also munjeet.
Wild madder, Rubia peregrina of Europe; also the Galium
Mollugo, a kind of bedstraw.
Source: Webster's Revised Unabridged Dictionary (1913)
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