Most Commonly: A kettle is a metallic pot with a handle, spout, and lid, primarily used for boiling water. These kettles are often used for making tea, coffee, or instant meals. Less Common: In some contexts, "kettle" can refer to a larger metal cooking pot used for boiling or stewing various things, not just water. This usage is more common in the US. Scientific: In geology, a kettle refers to a...