catechu

名词 catechu:

1. extract of the heartwood of Acacia catechu used for dying and tanning and preserving fishnets and sails; formerly used medicinally
   同义词：black catechu
2. East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
   同义词：Jerusalem thorn, Acacia catechu

cat.e.chu

n.（名词）

A spiny Asian tree(Acacia catechu) having bipinnately compound leaves, spikes of yellow flowers, and dark heartwood.
儿茶树：一种亚洲生多刺木（儿茶 金合欢属） ，有两羽状复叶、穗状黄花和深色心材
A raw material obtained from the heartwood of this plant, used in the preparation of tannins and brown dyes.Also called cutch
儿茶：从这种植物的心材中提取的原料，用于生产单宁酸和棕色染料也作 cutch
See betel palm
参见 betel palm

来源：
Probably from Malay kachu
可能源自 马来语 kachu
probably from Dravidian karaiyal, karaiccal [that which is dissolved]
可能源自 达罗毗荼诸语 karaiyal, karaiccal [溶化的东西]
from karai [to melt]
源自 karai [溶化]