1) Geyser of Wyoming 
A box-spring (or Divan in the UK) is a type of bed base typically consisting of a sturdy wooden frame covered in cloth and containing springs. Usually the box-spring is placed on top of a wooden or metal bedframe which sits on the floor and acts as a brace. The box-spring is usually the same size as the much softer mattress which is placed above t...
[n] - a coiled bedspring in a frame that is covered with cloth
Series of radars [SU:RU]
noun a coiled bedspring in a frame that is covered with cloth
an upholstered bedspring composed of a number of helical springs, each in a cylindrical cloth pocket.