1. (Science: botany) An herb (reseda luteola) related to mignonette, growing in Europe, and to some extent in America; dyer’s broom; dyer’s rocket; dyer’s weed; wild woad. It is used by dyers to give a yellow colour.
Alternative forms: woald, wold, and would.
2. Colouring matter or dye extracted from this plant.
Origin: OE. Welde; akin to Scot. Wald, Prov. G. Waude, G. Wau, Dan. & Sw. Vau, D. Wouw.