the castor-oil plant also used for other plants

Components

Meaning component
cao, cǎo grass

plant

Sound component
bēi humble, inferior

Character Evolution

Bronze form
Bronze Late Warring States ~250 BC
Seal form
Seal Shuowen ~100 AD
Regular Modern

Historical Pronunciations

Old Chinese
Zhengzhangbeɡ
slɯʔ

說文解字

雨衣。一曰衰衣。从艸卑聲。一曰萆藨,似烏韭。

Sources

Readings & variants
Unicode
Historical pronunciations
Zhengzhang Shangfang
Historical images
Academia Sinica