The meaning of DADO is the part of a pedestal of a column above the base.
What Is a Dado Joint? A dado joint connects the end of one piece of wood to the side of another, creating a right angle. You start by cutting a slot across the grain of the one board. This dado slot has a bottom and two sides, or “shoulders.”
Dado Joints: What They Are and How They're Used - The Family Handyman
A dado (US and Canada, / ˈdeɪdoʊ /), housing (UK) or trench (Europe) is a slot or trench cut into the surface of a piece of machinable material, usually wood. When viewed in cross-section, a dado has three sides.
A dado is defined by its channel being cut perpendicular to the wood grain, meaning it runs across the visible lines of the wood fibers on the face of the board.
What Is a Dado Joint and How Do You Cut One? - Engineer Fix
A dado joint is a rectangular groove cut across the grain of one piece of wood—usually the vertical “side” board—to accept the end of another board, like a shelf.
Dado, in Classical architecture, the plain portion between the base and cornice of the pedestal of a column and, in later architecture, the paneled, painted, or otherwise decorated lower part of a wall, up to 2 or 3 feet (60 to 90 cm) above the floor.
A dado wood joint features a rectangular slot (the dado) cut across the grain of a piece of wood, into which another piece fits snugly. This perpendicular connection is used to create shelves, partitions, or drawer bottoms in cabinetry and furniture.