Definition of screens:
(n) :
A physical divider intended to block an area from view, or provide shelter from something dangerous.
(n) :
A material woven from fine wires intended to block animals or large particles from passing while allowing gasses, liquids and finer particles to pass.
(n) :
(mining, quarrying) A frame supporting a mesh of bars or wires used to classify fragments of stone by size, allowing the passage of fragments whose a diameter is smaller than the distance between the bars or wires.
(n) :
(baseball) The protective netting which protects the audience from flying objects
(n) :
(printing) A stencil upon a framed mesh through which paint is forced onto printed-on material; the frame with the mesh itself.
(n) :
(by analogy) Searching through a sample for a target; an act of screening, or the method for it.