Frus"tum (?), n.; pl. L. Frusta (#), E. Frustums (#). [L. fruslum piece, bit.]
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.
One of the drums of the shaft of a column.
© Webster 1913.