• WordNet 3.6
    • n catechu East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source of black catechu
    • n catechu extract of the heartwood of Acacia catechu used for dyeing and tanning and preserving fishnets and sails; formerly used medicinally
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Webster's Revised Unabridged Dictionary
    • n Catechu (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.
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Century Dictionary and Cyclopedia
    • n catechu A name common to several astringent extracts prepared from the wood, bark, and fruit of various plants. The true catechu, or cutch, of commerce is a dark-brown, hard, and brittle substance, extracted by decoction and evaporation from the wood of Acacia Catechu and A. suma, East Indian trees. It is one of the best astringents to be found in the materia medica, and is largely used in tanning, calico-printing, etc. Pale or gambier catechu is obtained from a rubiaceous climber, Uncaria gambier (see gambier). A kind of catechu is also made from the nut of the betel-palm, Areca Catechu, but it is not an article of commerce. An artificial catechu, serviceable in dyeing, is obtainable from mahogany and similar woods. Also cashoo.
    • n catechu It is used extensively in cotton-dyeing, under the name of cutch, for the production of tan shades. It consists chiefly of two principles, catechu-tannic acid, and catechin or catechuic acid, which are accompanied by a brown amorphous substance called japonic acid. Japonic acid is the final oxidation-product of catechuic acid, and catechu-tannic acid is an intermediate oxidation-product. Bombay catechu, obtained from the heart-wood of the catechu palm. Areca Catechu, is considered the best quality for dyeing purposes; its principal constituent is catechu-tannic acid. Bengal catechu, obtained from the pods and twigs of the acacia, is less soluble than Bombay catechu. Cube catechu is the same as gambier catechu, which is a product of the leaves of Ouronparia Gambier and is sold in the form of yellow cubes.
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Chambers's Twentieth Century Dictionary
    • n Catechu kat′e-shoo a substance used in tanning and dyeing, and medicinally as an astringent, obtained from the heart-wood of several East Indian trees, as the betel-nut, &c.
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Webster's Revised Unabridged Dictionary
See Cashoo
Chambers's Twentieth Century Dictionary


In literature:

Turmeric, orchil, catechu, and indigo carmine are all extremely fugitive.
"Scientific American Supplement, No. 810, July 11, 1891" by Various
Phaenix sylvestris very abundant: Areca Catechu also becoming abundant.
"Journals of Travels in Assam, Burma, Bhootan, Afghanistan and TheNeighbouring Countries" by William Griffith
CATECHU: definition of, and whence derived.
"The Commercial Products of the Vegetable Kingdom" by P. L. Simmonds
And it was full of Vilwa, Arka, Khadira (catechu), Kapittha (wood-apple) and Dhava trees.
"The Mahabharata of Krishna-Dwaipayana Vyasa, Volume 1"
If Diarrhoea is present give Gum Catechu, two drams; Protan, three drams; Zinc Sulphocarbolates, one grain.
"The Veterinarian" by Chas. J. Korinek
Kathail Kath, wood, or kaththa, catechu.
"The Tribes and Castes of the Central Provinces of India - Volume IV of IV" by R.V. Russell
Catechu brown G K, 15 lb.
"The Dyeing of Cotton Fabrics" by Franklin Beech
Or, the following: opium, one drachm; catechu, two drachms; prepared chalk, one ounce.
"Cattle and Their Diseases" by Robert Jennings
With some dyes a separate bath is needed, such as with Camwood or Catechu.
"Vegetable Dyes" by Ethel M. Mairet
In obstinate cases 2 drams ergot of rye or of catechu may be added.
"Special Report on Diseases of Cattle" by U.S. Department of Agriculture
Compound Powder of Chalk, Quinine Mixture, Rhubarb, Catechu, will generally be sufficient.
"The Dog" by Dinks, Mayhew, and Hutchinson
Black catechu is official in most pharmacopoeias except that of Great Britain, in which pale catechu is the official drug.
"Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 5" by Various
The palms of the presidency consist of cocoa-nut, date, palmyra and areca catechu.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 2" by Various
A cordial ball, with catechu and opium, will often be serviceable either before or after a journey.
"Domestic Animals" by Richard L. Allen
Catechu is largely used by the cotton dyer for the production of brown, drab and similar colours.
"Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 8" by Various
Walnut (the roots or the husks or the nut) and catechu (the juice of a plant) are the most reliable brown dye-stuffs, giving good rich colour.
"Arts and Crafts Essays" by Various
"The American Reformed Cattle Doctor" by George Dadd
In this respect it is parallel with catechu.
"Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 7" by Various