Wainscot is a type of interior wall covering that typically consists of wooden panels, a DADO rail, and a ceiling rail. The term 'wainscot' is derived from the Dutch word 'wagenschot, ' which translates to 'wagon board.' Wainscot is used to cover the lower portion of a wall, usually up to a height of about three feet, and is often used to add a decorative element to a room. The four-letter solution CEIL refers to the ceiling rail, while the four-letter solution DADO refers to the DADO rail, and the five-letter solution PANEL refers to the wooden panels.