Definitions from Wiktionary (Doughnut)

▸ noun:  A deep-fried piece of dough or batter, usually mixed with various sweeteners and flavors, often made in a toroidal or ellipsoidal shape flattened sphere shape filled with jelly/jam, custard, or cream.
▸ noun:  (figuratively) Any object in the shape of a torus.
▸ noun:  (attributive) A circular life raft.
▸ noun:  (physics) A toroidal vacuum chamber.
▸ noun:  (Australia, Canada, US) A peel-out or skid mark in the shape of a circle; a 360-degree skid.
▸ noun:  A spare car tyre, usually stored in the boot, that is smaller than a full-sized tyre and is only intended for temporary use.
▸ noun:  A kind of tyre for an airplane.
▸ noun:  A shaper for making hair into a ponytail or bun
▸ noun:  (slang, vulgar) A vulva; by extension, a woman's virginity.
▸ noun:  (slang, vulgar) A puffy anus with the outward shape of a donut; more generally, any anus.
▸ noun:  (colloquial) A foolish or stupid person; an idiot.
▸ noun:  A toroidal cushion typically used by hemorrhoid patients.
▸ noun:  (music, slang) A whole note.
▸ verb:  To encircle something.
▸ noun:  (informal, UK) The head office of the GCHQ in Cheltenham, UK.
▸ Also see doughnut

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