Madder \Mad"der\ (m[a^]d"d[~e]r), n. [OE. mader, AS. maedere;
akin to Icel. ma[eth]ra.]
(Bot.)
A plant of the genus Rubia (Rubia tinctorum). The root is
much used in dyeing red, and formerly was used in medicine.
It is cultivated in France and Holland. See Rubiaceous.
[1913 Webster]
Note: Madder is sometimes used in forming pigments, as lakes,
etc., which receive their names from their colors, such
as madder yellow.
[1913 Webster]
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.
[1913 Webster]
Source: The Collaborative International Dictionary of English v.0.48
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