POPSUGAR Home Definition Sand Definition: Sand by Home 10/02/07 0 Shares Like us on Facebook To polish or scrape with sand or sandpaper. In home projects, sanding a surface will not only smooth it, but help finishes (such as paint or varnish) adhere better. Source Read More Definition Get inspired with our daily newsletter Sign up for our daily newsletter. Food Tech Vegetarian Home DIY Love and Sex Sign up with sgdish 7 years Sanding is a necessary evil. It can smooth a rough surface, or give "tooth" (traction) to a slick surface you'd like to paint. It's also the least fun thing to do, and messy! It depends on the grit/grade of the sandpaper you use. veronicaraye 7 years hehe, i knew this one! veronicaraye 7 years hehe, i knew this one!