SURBASE (Lat. super, whence the Fr. sur, above or upon, and base, q.v.), 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.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)