名詞 catechu:

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

cat.e.chu

n.（名詞）

A spiny Asian tree(Acacia catechu) having bipinnately compound leaves, spikes of yellow flowers, and dark heartwood.
兒茶樹：一種亞洲生多刺木（兒茶 金合歡屬） ，有兩羽狀復(fù)葉、穗狀黃花和深色心材
A raw material obtained from the heartwood of this plant, used in the preparation of tannins and brown dyes.Also called cutch
兒茶：從這種植物的心材中提取的原料，用于生產(chǎn)單寧酸和棕色染料也作 cutch
See betel palm
參見 betel palm

來源：
Probably from Malay kachu
可能源自 馬來語 kachu
probably from Dravidian karaiyal, karaiccal [that which is dissolved]
可能源自 達(dá)羅毗荼諸語 karaiyal, karaiccal [溶化的東西]
from karai [to melt]
源自 karai [溶化]