Architecture . a large convex molding, more or less semicircular in profile, commonly forming the lowest molding of the base of a column, directly above the plinth, sometimes occurring as one of a pair separated by a scotia and fillets. and column.

Geometry .

a doughnut-shaped surface generated by the revolution of a conic, esp. a circle, about an exterior line lying in its plane.

the solid enclosed by such a surface.

Botany .

the receptacle of a flower.

a thickening of the wall membrane in the bordered pits occurring in the tracheid cells of the wood of many conifers.

Anatomy . a rounded ridge; a protuberant part.