surbase

A molding or border above the base of a structure such as a baseboard.

In architecture, the crowning molding or cornice of a pedestal; a border or molding above a base, as the moldings immediately above the base-board or wainscoting of a room. See cut under dado.

To depress; flatten.

A cornice, or series of moldings, on the top of the base of a pedestal, podium, etc. See Illust. of column.

A board or group of moldings running round a room on a level with the tops of the chair backs.

the uppermost part of the moulding of a baseboard, a pedestal or a similar construct

to lower the rise of an arch

the molding or border above the base of a structure (a pedestal or podium or wall)