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doughnut

American  
[doh-nuht, -nuht] / ˈdoʊ nət, -ˌnʌt /
Or donut

noun

  1. a small cake of sweetened or, sometimes, unsweetened dough fried in deep fat, typically shaped like a ring or, when prepared with a filling, a ball.

  2. anything shaped like a thick ring; an annular object; toroid.


doughnut British  
/ ˈdəʊnʌt /

noun

  1. a small cake of sweetened dough, often ring-shaped or spherical with a jam or cream filling, cooked in hot fat

  2. anything shaped like a ring, such as the reaction vessel of a thermonuclear reactor

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. informal (tr) (of Members of Parliament) to surround (a speaker) during the televising of Parliament to give the impression that the chamber is crowded or the speaker is well supported

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of doughnut

First recorded in 1795–1805; dough + nut