What is varnish definition?

Varnish is a type of transparent coating that is applied to a surface to protect it and enhance its appearance. It is made of a combination of resins, solvents, and other chemicals that dry to form a hard, durable coating. Varnish can be applied to a variety of surfaces, including wood, metal, and concrete, and can come in a range of finishes, from gloss to matte. It is often used in woodworking and furniture making to protect and enhance the natural beauty of the wood. Varnish can also be used to protect surfaces from water damage, UV radiation, and other environmental factors. In addition to its protective properties, varnish can also be used to create unique decorative effects, such as glazes or antiquing.