Cachou de Laval

noun Ca·chou de La·val \-dələˈval\

Definition of Cachou de Laval

  1. :  a direct dark brown dye for cotton obtained as the first sulfur dye by heating organic materials (as sawdust or bran) with sulfur and sodium sulfide

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Origin and Etymology of cachou de laval

French, from Laval, city in France, place of its first manufacture

First Known Use: 1879

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to cast off or become cast off

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