Pebble-dash is a type of surface coating applied to walls or building facades. These coatings are usually made up of small stones or pebbles bound together with cement or plaster. While pebble-dash is a popular term used in the construction industry, there are several other synonyms that can be used to describe this textured finish. Some commonly used synonyms include roughcast, spatterdash, stucco, and harling. All of these terms refer to the same basic technique of applying small pebbles or stones to a wall surface and can be used interchangeably depending on regional variations or personal preference.