Torus
WordNet
noun
(1) Commonly the lowest molding at the base of a column
(2) A ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
WiktionaryText
Noun
- A three-dimensional shape consisting of a ring with a circular cross-section. The shape of an inner tube or hollow doughnut.
- A molding which projects at the base of a column and above the plinth.
- A botanical term for the end of the peduncle or flower stalk to which the floral parts (or in the Asteraceae, the florets of a flower head) are attached; see receptacle