"Dredge" refers to the process of removing sediment and debris from the bottom of bodies of water, such as rivers, lakes, and harbors. This is typically done using a machine called a dredger, which can scoop up materials like mud, sand, and gravel. Dredging is essential for maintaining navigable waterways, preventing flooding, and supporting construction projects. In addition to its practical uses, dredging can also have environmental impacts. It can disturb aquatic ecosystems and release pollutants trapped in the sediment. Therefore, careful planning and regulation are necessary to balance the benefits of dredging with the protection of natural habitats and water quality.