dado
n.,
pl. 3does 5It, a die, die-shaped part of pedestal, hence pedestal < L datum, a die, lit., what is given: see DATE16
1 the part of a pedestal between the cap and the base
2 the lower part of the wall of a room if decorated differently from the upper part, as with panels or an ornamental border
3 a) a rectangular groove cut in the side of one board so that another board may be fitted into it usually at right angles b) the joint thus made (in full, dado joint)
vt.
3doed, 3do[ing
1 to furnish with a dado
2 to fit into a dado groove
Also special blade for tablesaw to cut such grooves.