[kat-i-choo, -kyoo]
any of several astringent substances obtained from various tropical plants, especially from the wood of two East Indian acacias, Acacia catechu and A. suma: used in medicine, dyeing, tanning, etc.
Also called cashoo, cutch.

1670–80; < Neo-Latin < Portuguese; perhaps a conflation of Marathi kāt catechu and kāccu, with same sense, alleged to be < Malayalam; cashoo, cutch perhaps < Malay kacu < Malayalam, or a cognate Dravidian word Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
catechu, cachou or cutch (ˈkætɪˌtʃuː)
See also gambier 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
[C17: probably from Malay kachu, of Dravidian origin]
cachou, cachou or cutch
[C17: probably from Malay kachu, of Dravidian origin]
cutch, cachou or cutch
[C17: probably from Malay kachu, of Dravidian origin]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences for catechu
Areca catechu also contains tannin which contributes to its antibacterial properties.
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