join together (metal parts) by heating the surfaces to the point of melting with a blowpipe, electric arc, or other means, and uniting them by pressing, hammering, etc.

steel plates were being welded

the truck had spikes welded to the back

cause to combine and form a harmonious or effective whole

cross-curricular themes would weld the curriculum together

a welded joint

a widely distributed plant related to mignonette, yielding a yellow dye