doughnut
1. [ noun ] (geometry) a toroidal shape
Synonyms: ring anulus annulus anchor_ring halo
Examples:

"a ring of ships in the harbor" "a halo of smoke"

Related terms: toroid fairy_ring surround
2. [ noun ] (chemistry,food) a small ring-shaped friedcake
Synonyms: sinker donut
Related terms: friedcake raised_doughnut