A short encyclopedia entry defining the bobbin as a small wooden or metal roller, flanged at one or both ends, used to hold thread or yarn for sewing, weaving and other work. It notes that weaving bobbins usually have a flange at one end only, and that sewing-thread spools and sewing machine shuttle bobbins are common examples. It briefly describes automatic machine manufacture of wooden bobbins and cross-references the Loom entry.