Potbelly (noun)

1. A rounded belly, typically one that sticks out, as if from being overweight.
2. A stove or furnace with a rounded belly-shaped combustion chamber.

Origin:

Mid 19th century: from the resemblance of the stomach to a pot.

Examples:

1. He had a big potbelly that stuck out from under his shirt.
2. The potbelly stove was the centerpiece of the cabin.
3. He had a potbelly from eating too many sweets.
4. The old man had a potbelly from years of sitting at a desk.
5. The potbelly of the stove was made of cast iron.