A tealight, or nightlight,'s a candle used in tea or food warmers or (because they last for many hours) as a night light. It's different from a regular candle in that it's encased in a thin metal cover and liquefies completely while lit. Tealights are often used to heat fondue and as food warmers. They're also suitable for accent lighting and for heating scented oil. In tealights the wick's tethered to a piece of metal to stop it from floating to the top of the molten wax and burning before the… (More on Tealight)