scamillus

from The Century Dictionary.

• noun In Greek architecture, a part of a block of stone, as of the lower drum or the capital of a Doric column, made to project slightly by the beveling of the edge or edges of its bearing face, that the edges of the exposed face or faces may not be liable to chip when the block is placed in position.
• noun In Rom. arch., a second plinth or block under a statue, column, or the like, to raise it, but not, like a pedestal, ornamented with any molding.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Arch.) A sort of second plinth or block, below the bases of Ionic and Corinthian columns, generally without moldings, and of smaller size horizontally than the pedestal.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun architecture A sort of second plinth or block, below the bases of Ionic and Corinthian columns, generally without mouldings and of smaller size horizontally than the pedestal.