weld

from The American Heritage® Dictionary of the English Language, 5th Edition.

• intransitive verb To join (metals) by applying heat, sometimes with pressure and sometimes with an intermediate or filler metal having a high melting point.
• intransitive verb To bring into close association or union.
• intransitive verb To be capable of being welded.
• noun The union of two metal parts by welding.
• noun The joint formed by welding.
• noun The yellow dye obtained from dyer's rocket.

from The Century Dictionary.

• noun The dyer's-weed, Reseda luteola, a scentless species of mignonette, native in southern Europe and naturalized further north.
• noun A solid union of metallic pieces formed by welding; a welded junction or joint.
• A Middle English form of wield.
• 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.

from the GNU version of the Collaborative International Dictionary of English.

• transitive verb obsolete To wield.
• noun (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.
• noun Coloring matter or dye extracted from this plant.
• transitive verb To press or beat into intimate and permanent union, as two pieces of iron when heated almost to fusion.
• transitive verb Fig.: To unite closely or intimately.
• noun The state of being welded; the joint made by welding.
• noun See under Butt.
• noun a joint made by overlapping, and welding together, the scarfed ends of two pieces.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• verb transitive (obsolete) To wield.
• noun A herb (Reseda luteola) related to mignonette, growing in Europe, and to some extent in America, used to make a yellow dye; dyer's broom; dyer's rocket; dyer's weed; wild woad.
• noun The yellow coloring matter or dye extracted from this plant.
• verb transitive To bind together inseparably; to unite closely or intimately.
• verb transitive To join two materials (especially two metals) together by applying heat, pressure and filler, either separately or in any combination.
• noun The state of being welded.
• noun The joint made by welding.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• verb unite closely or intimately
• noun European mignonette cultivated as a source of yellow dye; naturalized in North America
• verb join together by heating
• noun United States abolitionist (1803-1895)
• noun a metal joint formed by softening with heat and fusing or hammering together