# cachou de Laval

> English word · Noun

## Definitions
1. A forerunner of sulfur dyes, prepared by treating products with lignin (like sawdust or straw) with sulfide sources (like sodium hydroxide or sulfide mixed with sulfur).

## Etymology
French [Term?]

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/cachou-de-laval