n. The dyer's-weed, Reseda luteola, a scentless species of mignonette, native in southern Europe and naturalized further north.To unite or consolidate, as pieces of metal or a metallic powder, by hammering or compression with or without previous softening by heat.Figuratively, to bring into intimate union; make a close joining of: as, to weld together the parts of an argument.To undergo the welding process; be capable of being welded.n. A solid union of metallic pieces formed by welding; a welded junction or joint.A Middle English form of wield.