Frustum
Pronunciation : Frus"tum, n.; pl. L. Frusta
Part of Speech : E.
Etymology : [L. fruslum piece, bit.]
Definition : 1. (Geom.)
Defn: 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.)
Defn: One of the drums of the shaft of a column.
Frustums.
Source : Webster's Unabridged Dictionary, 1913