Scarf n. (a) In a piece which is to be united to another by a scarf joint, the part of the end or edge that is tapered off, rabbeted, or notched so as to be thinner than the rest of the piece. (b) A scarf joint.
 Scarf joint (a) A joint made by overlapping and bolting or locking together the ends of two pieces of timber that are halved, notched, or cut away so that they will fit each other and form a lengthened beam of the same size at the junction as elsewhere. (b) A joint formed by welding, riveting, or brazing together the overlapping scarfed ends, or edges, of metal rods, sheets, etc.
 Scarf weld. See under Weld.

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 Weld, n. The state of being welded; the joint made by welding.
 Butt weld. See under Butt.
 Scarf weld, a joint made by overlapping, and welding together, the scarfed ends of two pieces.

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