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Related to catechu: black catechu
1. A spiny Asian tree (Acacia catechu) having bipinnately compound leaves, spikes of yellow flowers, and dark heartwood.
2. A raw material obtained from the heartwood of this plant, used in the preparation of tannins and brown dyes. In both senses also called cutch.
[Probably from Malay kachu, probably from Dravidian karaiyal, karaiccal, that which is dissolved, from karai, to melt.]
(Elements & Compounds) a water-soluble astringent resinous substance obtained from any of certain tropical plants, esp the leguminous tree Acacia catechu of S Asia, and used in medicine, tanning, and dyeing. See also gambier
[C17: probably from Malay kachu, of Dravidian origin]
cat•e•chu(ˈkæt ɪˌtʃu, -ˌkyu)
any of several astringent substances obtained from various tropical Asian plants, esp. two East Indian acacias, Acacia catechu and A. suma: used in medicine, dyeing, tanning, etc. Also called cutch.
[1670–80; < New Latin < Portuguese]
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|Noun||1.||catechu - extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally|
Acacia catechu, catechu, Jerusalem thorn - East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
|2.||catechu - East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu|
genus Acacia - large genus of shrubs and trees and some woody vines of Central and South America, Africa, Australia and Polynesia: wattle; mimosa
acacia - any of various spiny trees or shrubs of the genus Acacia