D

n.; pl. Dadoes. (Arch.) (a) That part of a pedestal included between the base and the cornice (or surbase); the die. Hence: (b) In any wall, that part of the basement included between the base and the base course. See Base course, under Base. (c) In interior decoration, the lower part of the wall of an apartment when adorned with moldings, or otherwise specially decorated.

 - vb. To secure by setting in a groove. To make a rectangular groove in a board or plank.