GNU Collaborative International Dictionary of English

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1.       
   Catechu , n. [See Cashoo.] (Chem.) A dry, brown, astringent extract, obtained by decoction and evaporation from the Acacia catechu, and several other plants growing in India. It contains a large portion of tannin or tannic acid, and is used in medicine and in the arts. It is also known by the names terra japonica, cutch, gambier, etc.
   Ure. Dunglison.
   
   1913 Webster