A kettle is a kitchen appliance used for boiling water. It typically has a spout for pouring and a handle for easy lifting. Kettles can be made from various materials, including stainless steel, glass, and plastic. They come in both electric and stovetop versions, with electric kettles heating water quickly using an internal heating element. Kettles are commonly used for making hot beverages like tea and coffee. Some kettles also have features like temperature control and automatic shut-off for safety. The design and functionality of a kettle can vary, but its primary purpose remains the same: to heat water efficiently.