Glasspaper

Part of speech: noun

Definitions

1. A fine abrasive material made from a sheet coated with glass particles is used for smoothing surfaces in various applications like woodworking and finishing
2. Sheets featuring a fine glass particle coating serve as an abrasive tool, primarily for polishing and smoothing surfaces in crafting and carpentry
3. A type of sandpaper consisting of a substrate coated with tiny glass grains is utilized for refining the texture of surfaces and achieving a smooth finish

Etymology: Glasspaper is about as transparent a compound as English offers: it is simply glass plus paper. The "paper" is the backing, a sheet onto which crushed glass was glued, and the "glass" names the abrasive grit itself. That literal description is also the whole story, so there is little more to trace beyond the two parts. The word's usefulness lies in what it does. Glass fragments are hard and sharp enough to scrape away old paint, varnish and rough wood, which made glasspaper a practical alternative to sandpaper, where the abrasive is mineral sand or crushed stone. Woodworkers and decorators still use the term, especially in British English, where it remains a common everyday name for fine abrasive sheets.