Doughnut (noun)

1. A sweet, deep-fried ring of dough or batter, typically with a sweet glaze or sugar coating.
2. A ring-shaped object or shape.

Origin:

Early 18th century: from dutch donut, from dun "dull" + not "nut".

Examples:

1. She bought a dozen doughnuts for the office party.
2. He ate a chocolate doughnut for breakfast.
3. The doughnut shop was crowded with customers.
4. The doughnut was still warm from the fryer.
5. The doughnut hole is a favorite among children.