(weld) v.t.
1. To unite, as two pieces of metal, with or without pressure, by the application of heat along the area of contact.
2. To bring into close association or connection.
—v.i.
3. To admit of being welded.
—noun The consolidation of pieces of metal by welding; also, the closed joint so formed. [Alter of WELL¹, v.]
—weld′a·bil′·i·ty noun
—weld′a·ble adjective
—weld′er noun

(weld) noun
1. An erect Old World annual (Reseda luteola), formerly cultivated for dyers' use: also called yellowweed.
2. The yellow pigment obtained from it: also spelled woald. [ME welde. Cf. MLG walde, MDu. woude.]