a power tool used for sanding wood; an endless loop of sandpaper is moved at high speed by an electric motor
"After running the smoother over the rough oak table, the surface became perfectly polished."
One who, or that which, smooths.
"The new lotion claims to be a smoother for dry skin, leaving it feeling soft after just one application."
comparative form of smooth: more smooth
"The new car's ride felt much smoother than the old sedan we used to drive."