to wield.-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.