A tool or device used for polishing and smoothing surfaces, or a craftsperson who specializes in burnishing metalwork and other materials.
From 'burnish' + -er. The tool-meaning emerged as the craft became increasingly professionalized in medieval Europe, with specialized implements developed.
Professional burnishers in Renaissance workshops had an arsenal of stone, bone, and metal burnishers in different shapes—specialized tools for achieving specific sheens on different metals!
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