Curbstone, also known as kerbstone, is a precast concrete or natural stone element used to define and separate roads, sidewalks, parking areas, and landscaped spaces. It provides structural support to pavements, enhances safety by guiding traffic and pedestrians, and adds a clean, organized aesthetic to urban and outdoor environments. Curbstones are highly durable, weather-resistant, and available in various sizes, shapes, and finishes to suit different infrastructure and landscape projects.