In 1809, Washington Irving’s Knickerbockers History of New York described small, tasty balls of fried dough that were called Dough Nuts.
Doughnuts got their name because they resembled walnuts.
The Dutch had introduced them as oil cakes and usually baked them as treats for holidays.
After the introduction of baking powder and tin doughnut cutters, the hole was manufactured commercially around 1845.
And that’s why those tasty round pastries with holes in the center are called doughnuts.