名詞 madder:

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

動詞 madder:

1. color a moderate to strong red

形容詞 mad:

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

mad.der

n.（名詞）

A southwest Asian perennial plant(Rubia tinctorum) having small yellow flowers, whorled leaves, and a red root.
茜草：亞洲西南部的多年生（茜草屬 歐茜草） 植物開有小黃花，生有卷狀葉和紅根
The root of this plant, formerly an important source of the dye alizarin.
茜草根：該植物的根，原為染料茜素的重要來源
A red dye obtained from the roots of this plant.
茜素：從該植物根中提出的一種紅色染料
Color A medium to strong red or reddish orange.
【色彩】 茜紅：深紅或桔紅色

來源：
Middle English
中古英語
from Old English môdere
源自 古英語 môdere