Frustum \Frus"tum\, n.; pl. L. {Frusta}, E. {Frustums}. [L.
fruslum piece, bit.]
[1913 Webster]
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.
[1913 Webster]
2. (Arch.) One of the drums of the shaft of a column.
[1913 Webster]