The Collaborative International Dictionary of English v.0.48:
Buttweld \Butt"weld`\, v. t. To unite by a butt weld. [1913 Webster]WordNet (r) 3.0 (2006):
butt-weld n 1: a butt joint that is welded [syn: butt weld, butt-weld] v 1: join by a butt weld [syn: butt-weld, buttweld]