DICT.TW Dictionary Taiwan
Weld n.
1. Bot. 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 color. [Written also woald, wold, and would.]
2. Coloring matter or dye extracted from this plant.