The Collaborative International Dictionary of English v.0.48:

Weld \Weld\ (w[e^]ld), n. [OE. welde; akin to Scot. wald, Prov.
   G. waude, G. wau, Dan. & Sw. vau, D. wouw.]
   [1913 Webster]
   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.]
      [1913 Webster]

   2. Coloring matter or dye extracted from this plant.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Woald \Woald\, n.
   See Weld.
   [1913 Webster]