What is "surbase"

Surbase \Sur"base`\, n. [Pref. sur- + base.]

1. (Arch.) A cornice, or series of moldings, on the top of the base of a pedestal, podium, etc. See Illust. of Column.

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

n. (context architecture English) the uppermost part of the moulding of a baseboard, a pedestal or a similar construct vb. (context architecture English) to lower the rise of an arch

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

Surbase ( Lat. super, whence the Fr. sur, above or upon, and base), i.e., upper base, the term in architecture applied to what, in the fittings of a room, is called the chair-rail.

It is also used to distinguish the cornice of a pedestal or podium and is separated from the base by the dado or die.