waterwallEtymologyFrom water + wall.nounA panel on the side of a furnace consisting of multiple tubes that carry water.“The use of such tempering air has diminished greatly with the shift from refractory to waterwall incinerator construction.”An architectural feature consisting of a wall down which water flows.“For greater heights, an interrupted sheet, spouts, a waterwall, or a cascade will provide a display of equal or greater visibility while affording considerable energy savings, less splash, greater wind stability, and a sound quality more appropriate to confined or interior spaces.”