Other forms: sanders
A sander is a machine that rubs a surface smooth for you. An orbital sander, a belt sander, use the sander.
The orbital kind moves in small circles and is forgiving; the belt kind removes material fast and will ruin a surface in seconds if left in one place. Both need dust extraction, since fine wood dust is a genuine hazard to the lungs.
1nounsanderA machine that rubs a surface smooth for you.
“He used an electric sander to smooth the old table before painting it.”
sander is a tool.
Middle English
sond
English
sand
English, today
sander
From sand + -er. sand comes from Middle English sond. Middle English sond, sand, from Old English sand, from Proto-West Germanic samd, from Proto-Germanic samdaz. See also frr sun, Sön, sönj (“sand”), stq Sound (“sand”), West Frisian sân (“sand”), Dutch zand (“sand”), German and lb Sand (“sand”), Yiddish זאַמד (“sand”), Danish, Norwegian Bokmål, Norwegian Nynorsk and Swedish sand (“sand”), Faroese and Icelandic sandur (“sand”), Latin sabulum (“sand, gravel”), Ancient Greek ἄμαθος (“sand”), English - dialectal samel (“sand bottom”), Old Irish do·essim (“to pour out”), Latin sentina (“bilge water”), Lithuanian sémti (“to scoop”), Ancient Greek ἀμάω (“to gather”), ἄμη (“water bucket”).
Etymology from Wiktionary, CC BY-SA