A "wrecking ball" is a heavy steel ball used in demolition to knock down buildings and structures. It is typically suspended from a crane and swung into walls or other parts of a building to break them apart. The weight and momentum of the ball make it effective for demolishing large structures quickly. Wrecking balls are often used in urban construction and renovation projects. They can be part of a larger demolition process that may also include other equipment, such as excavators and bulldozers. Safety measures are crucial during this process to protect workers and nearby structures.