Real Dictionary

weld
verb: To weld one piece of metal to another means to join them by heating the edges and putting them together so that they cool and harden into one piece.

weld in American English 1
to be welded or capable of being welded
to unite (pieces of metal, plastic, etc.) by heating until molten and fused or until soft enough to hammer or press together
intransitive verb: to undergo welding; be capable of being welded
noun: a welded junction or joint
transitive verb: to unite or fuse (as pieces of metal) by hammering, compressing, or the like, esp. after rendering soft or pasty by heat, and sometimes with the addition of fusible material like or unlike the pieces to be united

weld in American English 2
a European mignonette ( Reseda luteola) that yields a yellow dye
noun: a mignonette, Reseda luteola, of southern Europe, yielding a yellow dye

Weld in British English
noun: Sir Frederick Aloysius. 1823–91, New Zealand statesman, born in England: prime minister of New Zealand (1864–65)

weld in British English 1
noun: a joint formed by welding
verb: to unite (pieces of metal or plastic) together, as by softening with heat and hammering or by fusion

weld in British English 2
noun: a yellow dye obtained from the plant dyer's rocket