noun
dado
DAY-doh/ˈdeɪdəʊ/
The lower section of an interior wall below a molding.
Blue-green paneling covers the dado below a narrow horizontal molding.

Etymology
Italian dado meant a die or cube. In architecture, the word named the section of a pedestal between its base and cornice before extending to paneling on the lower part of a wall.
More examples
- We paint the dado a darker color than the wall above.
- A chair rail separates the dado from the upper wall.
- Decorative tiles cover the dado in the hallway.
Forms
dado · dados · dadoes
molding noun — A shaped strip used for decoration.
Similar words
- wainscot
- Refers specifically to paneling, not the wall section itself.