madder

名词 madder:

1. Eurasian herb having small yellow flowers and red roots formerly an important source of the dye alizarin
   同义词：Rubia tinctorum

动词 madder:

1. color a moderate to strong red

形容词 mad:

1. roused to anger
   同义词：huffy, mad, sore
2. affected with madness or insanity
   同义词：brainsick, crazy, demented, distracted, disturbed, mad, sick, unbalanced, unhinged
3. marked by uncontrolled excitement or emotion
   同义词：delirious, excited, frantic, mad, unrestrained
4. very foolish
   同义词：harebrained, insane, mad

mad.der

n.（名词）

A southwest Asian perennial plant(Rubia tinctorum) having small yellow flowers, whorled leaves, and a red root.
茜草：亚洲西南部的多年生（茜草属 欧茜草） 植物开有小黄花，生有卷状叶和红根
The root of this plant, formerly an important source of the dye alizarin.
茜草根：该植物的根，原为染料茜素的重要来源
A red dye obtained from the roots of this plant.
茜素：从该植物根中提出的一种红色染料
Color A medium to strong red or reddish orange.
【色彩】 茜红：深红或桔红色

来源：
Middle English
中古英语
from Old English môdere
源自 古英语 môdere