Definitions for madderˈmæd ər
Random House Webster's College Dictionary
any plant of the genus Rubia, esp. the climbing R. tinctorum, of Europe, having open clusters of small yellowish flowers.
the root of this plant, formerly used in dyeing.
a reddish dye derived from madder.
Origin of madder:
bef. 1000; ME mad(d)er, OE mæd(e)re
Ref: comparative of mad. 1
madder, Rubia tinctorum(verb)
Eurasian herb having small yellow flowers and red roots formerly an important source of the dye alizarin
color a moderate to strong red
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