souderium

souderium [ME souder], solder. 1463 plumbario pro labore suo et novo plumbo et novo soldario in reparacione aqueductus aule Cant. Coll. Ox. II 183; c1533 pro vj lb. de solderio emptis et expenditis circa gutturam aule infirmarii ‥ pro lxxvj lb. soulderii emptis et expenditis supra claustrum refectorium et ultra scrinium Comp. Swith. 216.