Contour refers to the outline or shape of an object, often used in art and design to define its form. In drawing, contour lines are used to represent the edges and details of a subject, helping to create a three-dimensional appearance on a two-dimensional surface. In geography, contour lines on a map indicate elevation and the steepness of terrain. These lines connect points of equal height, allowing users to visualize the landscape's shape, such as hills and valleys. Understanding contour is essential in fields like cartography and landscape design.