waterwall

noun2

1. •
   An architectural feature consisting of a wall down which water flows.

   • The design of the waterwalls provides a dramatic environment for its intended purpose as an entrance zone, bridging together the inside of the building and the Commons and park outside. — 2006
2. •
   A 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. — 2002