What does "donut" mean?

Alternative spelling of doughnut.

What is a synonym for "donut"?

Common synonyms include: doughnut, doughnuts, fried dough ring, idiot, ring torus, ring-shaped.

noun

noun ·2 syllables ·Rare ·Advanced level

Noun

1
Alternative spelling of doughnut. Australia, Canada, US, alt-of, alternative
"[…]Pa said he guessed he hadn't got much appetite, and he would just drink a cup of coffee and eat a donut."
2
a small ring-shaped friedcake wordnet

"Tom ate the chocolate donut that I had smuggled into the hospital."

Alteration of doughnut, from dough + nut. Attested 1900.