scarf joint A joint formed by notching and lapping the ends of two members; a joint so formed is secured by various means: wedges, pegs, bolts, straps, or by the use of fishplates. Scarf, and splice are often used synonymously with this term. (Phillips, 1994) Illustrated Dictionary of Architecture (2002)Glossary of Bridge Terminology (2019)hooked scarf jointend scarf jointOld House Dictionary (1994)