1. the doughnut-shaped object enclosed by a torus • Derivationally related forms: toroidal • Hypernyms: solid • Hyponyms: ring, halo, annulus, doughnut, anchor ring 2. a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle • Syn: torus • Derivationally related forms: toroidal • Hypernyms: round shape • Hyponyms: core, magnetic core