weld

Concise Oxford English Dictionary © 2008 Oxford University Press:
weld1

▶verb

• 1 join together (metal parts) by heating the surfaces to the point of melting and pressing or hammering them together.

  ■ forge (an article) by such means.

• 2 cause to combine and form a whole.

▶noun a welded joint.

– derivatives
weldability noun,
weldable adjective,
welder noun.

– origin C16 (in the sense ‘become united’): alt. (prob. influenced by the past part.) of well2 in the obs. sense ‘melt or weld (heated metal)’.

Concise Oxford English Dictionary © 2008 Oxford University Press:
weld2

▶noun a plant related to mignonette, yielding a yellow dye. [Reseda luteola.]

– origin ME: rel. to Du. wouw, perh. also to wold.