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Astringent or dye
Answer for the clue "Astringent or dye ", 7 letters:
catechu
Word definitions for catechu in dictionaries
Wiktionary
Word definitions in Wiktionary
n. A gummy extract of any of several species of Acacieae, produced by boiling the wood of the tree in water and evaporating the resulting liquid.
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
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 ...
Wikipedia
Word definitions in Wikipedia
Catechu ( or ) is an extract of acacia trees used variously as a food additive, astringent, tannin, and dye. It is extracted from several species of Acacia , but especially Senegalia catechu ( Acacia catechu ), by boiling the wood in water and evaporating ...
WordNet
Word definitions in WordNet
n. extract of the heartwood of Acacia catechu used for dying and tanning and preserving fishnets and sails; formerly used medicinally [syn: black catechu ] East Indian spiny tree having twice-pinnate leaves and yellow flowers followed by flat pods; source ...
Usage examples of catechu.
Although it was predominantly a Malay practice the habit of chewing betel nuts, which released the reddening areca catechu stain, was widespread throughout the East.
Continuing to read out the analyses, Rosetti said tests on gum tissue from the mouths of the second French victim and the girls in London and Vienna gave areca catechu extract as the cause of the heightened mouth redness he'd found in each.
The Pale Catechu (Gambier Catechu) is largely used in the arts, for dyeing purposes, yielding a colour known as 'Cutch Brown.