|Origin:||well 'to weld' (15-19 centuries), from Old English wellan; WELL5|
to join metals by melting their edges and pressing them together when they are hot:
The new handle will have to be welded on.
2 [transitive always + adverb/preposition]
to join or unite people into a single strong group:
His job is now to weld the players into a single team.