'Madderwort' definitions:

Definition of 'madderwort'

(from WordNet)
noun
Any of numerous trees or shrubs or vines of the family Rubiaceae [syn: madderwort, rubiaceous plant]

Definition of 'Madderwort'

From: GCIDE
  • Madderwort \Mad"der*wort`\, n. (Bot.) A name proposed for any plant of the same natural order (Rubiaceae) as the madder. [1913 Webster]