1. [n]  something that keeps things out or hinders sight; "they had just moved in and had not put up blinds yet"
2. [n]  protective covering consisting of a metallic netting mounted in a frame and covering windows or doors (especially for protection against insects)
3. [n]  a covering that serves to conceal or shelter something; "they crouched behind the screen"; "under cover of darkness"
4. [n]  partition consisting of a decorative frame or panel that serves to divide a space
5. [n]  display on the surface of the large end of a cathode-ray tube on which is electronically created
6. [n]  a white or silvered surface where pictures can be projected for viewing
7. [n]  a door that is a screen to keep insects from entering a building through the open door; "he heard the screen slam as she left"
8. [n]  a strainer for separating lumps from powdered material or grading particles
9. [v]  examine methodically; test for suitability
10. [v]  protect, hide, or conceal from danger or harm
11. [v]  separate with a riddle, as grain from chaff
12. [v]  prevent from entering, as of light
13. [v]  project onto a screen for viewing; of films
14. [v]  examine in order to test suitability; "screen these samples"; "screen the job applicants"
15. [v]  test or examine for the presence of disease or infection; "screen the blood for the HIV virus"

Screen
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1. \Screen\ (skr[=e]n), n. (Cricket)
   An erection of white canvas or wood placed on the boundary
   opposite a batsman to enable him to see ball better.
   

2. \Screen\ (skr[=e]n), n. [OE. scren, OF. escrein, escran,
   F. ['e]cran, of uncertain origin; cf. G. schirm a screen,
   OHG. scirm, scerm a protection, shield, or G. schragen a
   trestle, a stack of wood, or G. schranne a railing.]
   1. Anything that separates or cuts off inconvenience, injury,
      or danger; that which shelters or conceals from view; a
      shield or protection; as, a fire screen.
            Your leavy screens throw down.        --Shak.
            Some ambitious men seem as screens to princes in
            matters of danger and envy.           --Bacon.
   2. (Arch.) A dwarf wall or partition carried up to a certain
      height for separation and protection, as in a church, to
      separate the aisle from the choir, or the like.
   3. A surface, as that afforded by a curtain, sheet, wall,
      etc., upon which an image, as a picture, is thrown by a
      magic lantern, solar microscope, etc.
   4. A long, coarse riddle or sieve, sometimes a revolving
      perforated cylinder, used to separate the coarser from the
      finer parts, as of coal, sand, gravel, and the like.
   

3. \Screen\ (skr[=e]n), v. t. [imp. & p. p. {Screened}; p.
   pr. & vb. n. {Screening}.]
   1. To provide with a shelter or means of concealment; to
      separate or cut off from inconvenience, injury, or danger;
      to shelter; to protect; to protect by hiding; to conceal;
      as, fruits screened from cold winds by a forest or hill.
            They were encouraged and screened by some who were
            in high commands.                     --Macaulay.
   2. To pass, as coal, gravel, ashes, etc., through a screen in
      order to separate the coarse from the fine, or the
      worthless from the valuable; to sift.