Definition of ring wall in US English:

ring wall


  • 1A wall completely surrounding or encircling a certain area.

  • 2A circular wall forming the refractory lining of a furnace or kiln. Now historical.

  • 3Now chiefly Science Fiction. A roughly circular ring of cliffs or mountains enclosing an area such as a crater or a lunar mare.


Early 19th century; earliest use found in Julius Hare (1795–1855), author and Church of England clergyman. From ring + wall, probably after German Ringmauer.


ring wall

/ˈrɪŋ wɔːl/