ETYM Old Eng. scren, Old Fren. escrein, escran, French écran, of uncertain origin; cf. German schirm a screen, Old High Germ. scirm, scerm a protection, shield, or German schragen a trestle, a stack of wood, or German schranne a railing.
1. A covering that serves to conceal or shelter something; SYN. cover, covert, concealment.
2. A white or silvered surface where pictures can be projected for viewing; SYN. silver screen, projection screen.
3. A decorative frame or panel serving to divide a space.
4. A metallic netting mounted in a frame and covering windows or doors for protection (especially against insects).
5. The surface of the large end of a cathode-ray tube on which an electronically created image is formed; SYN. crt screen.

1. To examine in order to test suitability; SYN. screen out, sieve, sort.
2. To examine methodically; test for suitability.
3. To prevent from entering, as of light; SYN. block out.
4. To project onto a screen for viewing; of films.
5. To test or examine for the presence of disease or infection; SYN. test.

Or monitor; Output device on which a computer displays information for the benefit of the operator. The commonest type is the cathode-ray tube (CRT), which is similar to a television screen. Portable computers often use liquid crystal display (LCD) screens. These are harder to read than CRTs, but require less power, making them suitable for battery operation.