Other forms: refinished; refinishing; refinishes
To refinish something is to repair or replace its surface. You might decide to refinish the scratched and worn wood floors in your house, for example.
The surfaces of wooden things, like furniture and floors, can become dull and scratched over time, or may even be painted. If you wanted to remove old paint from an oak table and make it gleam, you'd refinish it — sanding the surface, staining it, and possibly coating it with a layer of protective wax. Refinish, "apply a new finish to," is based in the finish meaning "surface appearance of a material or object."