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.]
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Indo-European & Semitic Roots Appendices
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