Dune is a four-letter word that is used to describe a kind of buggy. A DUNE buggy is a recreational vehicle with large wheels and wide tires, designed for use on sand dunes, beaches, or desert terrain. It is usually a modified version of a standard vehicle, such as a Volkswagen Beetle, and is often used for off-road racing. DUNE buggies are popular among off-road enthusiasts and are often seen at beach resorts and other tourist destinations.