The term 'Stovetop Whistler' refers to a device used to heat water on a stovetop. It is also known as a KETTLE or teakettle. Kettles are typically made of metal and have a handle and spout, and they produce a whistling sound when the water has reached boiling point. Teakettles are similar to kettles but are usually made of ceramic or porcelain and have a lid. Both kettles and teakettles are used to heat water for making tea, coffee, hot chocolate, and other beverages.