Weld, v. t. [imp. & p. p. Welded; p. pr. & vb. n. Welding.] [Probably
originally the same word as well to spring up, to gush; perhaps from
the Scand.; cf. Sw. välla to weld, uppvälla to boil up, to spring up,
Dan. vælde to gush, G. wellen to weld. See Well to spring.]
1. To press or beat into intimate and permanent union, as two pieces of
iron when heated almost to fusion.
Very few of the metals, besides iron and platinum. are capable of being
welded. Horn and tortoise shell possess this useful property.