- 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.
- Coloring matter or dye extracted from this plant.
- To press or beat into intimate and permanent union, as two pieces of iron when heated almost to fusion.
- Fig.: To unite closely or intimately.
- The state of being welded; the joint made by welding.