madder
/ˈmædə(r)/noun
1- a scrambling or prostrate Eurasian plant related to the bedstraws, with whorls of four to six leaves茜草。
1.1
- Genera Rubia and Sherardia, family Rubiaceae: several species, in particular R. tinctorum of southern Europe and western Asia, formerly cultivated for its root which yields a red dye, and the Eurasian wild madder (R. peregrina).茜草属和雪亚迪草属, 茜草科, 数种, 尤指南欧和西亚的普通茜草（拉丁名R. Tinctorum）。过去人们种植它并从其根部提取一种红色染料。亦指欧亚大陆的野茜草（拉丁名R. Peregrina）。
1.2
- mass noun a red dye or pigment obtained from the root of this plant, or a synthetic dye resembling it（从茜草根提取的）茜草红; （人工合成的）红色染料。
词源
Old English mædere, of Germanic origin; obscurely related to Dutch mede, in the same sense.