Definitions
1.nounA deep-fried piece of dough or batter, commonly made in a toroidal or ellipsoidal shape, and mixed with various sweeteners and flavors, sometimes filled with jelly, custard or cream.
2.nounAnything in the shape of a torus.
3.noun(automobile) A peel-out or skid-mark in the shape of donut; a 360-degree skid.
4.nounA spare tire, smaller and less durable than a full-sized tire, only intended for temporary use.
5.nounA toroidal cushion typically used by hemorrhoid patients.
6.nounAn idiot.