catechu



From The Collaborative International Dictionary of English v.0.48:


Catechu \Cat"e*chu\, 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]














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