sander

A "sander" is usually a tool or machine used to smooth a surface by rubbing it with sandpaper or another rough material. People use one on wood, metal, walls, and other surfaces when they want to remove rough spots or get something ready for paint or polish. In some contexts, a "sander" can also mean a person who does this kind of work. You may also see the word used for a vehicle that spreads sand on icy roads to make driving safer. In most everyday situations, though, the first meaning people think of is the tool.

The word "sander" is most often used for a tool or machine that smooths a surface by sanding it. In a workshop or at home, a sander helps take off a thin top layer so wood, metal, filler, or painted walls feel more even and look cleaner. Some are small hand tools, while others are power tools. Common examples include belt sanders for faster work, orbital sanders for a smoother finish, and detail sanders for corners or tight spaces. If someone says they need a sander for a table, a door, or a wall, this is almost certainly the meaning.

The word can also refer to a person whose job is to sand surfaces, though this use is less common in everyday speech. In road work and winter driving, a "sander" may mean a vehicle that spreads sand on icy or snowy roads to improve traction. That meaning usually appears in news reports, public works writing, or weather-related talk.

You may sometimes see "Sander" as a surname, but that is a proper name rather than the main vocabulary meaning of the common noun. In ordinary English, "sander" is mainly about smoothing surfaces, and the exact meaning becomes clear from the setting.