| n. | 1. | |
| 1. | (Geom.) The part of a solid next the base, formed by cutting off the, top; or the part of any solid, as of a cone, pyramid, etc., between two planes, which may be either parallel or inclined to each other. | |
| 2. | (Arch.) One of the drums of the shaft of a column. |
| Noun | 1. | frustum - a truncated cone or pyramid; the part that is left when a cone or pyramid is cut by a plane parallel to the base and the apical part is removed |