A sink is a plumbing fixture used for washing hands, dishes, and other items. It typically consists of a basin that holds water and a drain that allows wastewater to flow away. Sinks are commonly found in kitchens and bathrooms and can be made from various materials, including stainless steel, porcelain, and composite materials. Sinks are equipped with faucets that provide a controlled flow of water. They may also have additional features like garbage disposals, which grind food waste, and soap dispensers. Proper installation and maintenance of a sink are essential for hygiene and functionality in any home or establishment.