dado
Pronunciation: /ˈdeɪdəʊ/
noun ( plural dados)
- 1the lower part of the wall of a room, below about waist height, when decorated differently from the upper part.
- short for dado rail. dados were fixed to the wall to protect the plaster

Origin:
mid 17th century (denoting the main part of a pedestal, above the base): from Italian, literally 'dice or cube', from Latin datum 'something given, starting point' (see datum)