Examples from the Web for surbase
Beneath the surbase, the panels, as also those of the door, were covered with arabesques.The Loyalists of Massachusetts|James H. Stark
The queen's throne room is really most splendidly finished, the walls and mouldings gilt, and the surbase of fine blue marble.
Usually this surbase is molded to resemble the upper fascia or the complete architrave of the various orders.
On the landing dainty little fluted pilasters support the surbase, their fine scale lending much grace and refinement.
For a final safeguard, Garson searched for and found the telephone bell-box on the surbase below the octagonal window.Within the Law|Marvin Dana