madder is sometimes used in forming pigments, as lakes, etc, which receive their names from their colours; 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.