Dado (painter)
WordNet
noun
(1) A rectangular groove cut into a board so that another piece can fit into it
(2) The section of a pedestal between the base and the surbase
(3) Panel forming the lower part of an interior wall when it is finished differently from the rest of the wall
verb
(4) Cut a dado into or fit into a dado
(5) Provide with a dado
"The owners wanted to dado their dining room"