n. 1.a white or silvered surface where pictures can be projected for viewing 2.something that keeps things out or hinders sight 3.display on the surface of the large end of a cathode-ray tube on which is electronically created 4.a covering that serves to conceal or shelter something 5.protective covering consisting of a metallic netting mounted in a frame and covering windows or doors (especially for protection against insects) 6.a strainer for separating lumps from powdered material or grading particles 7.a door that is a screen to keep insects from entering a building through the open door 8.partition consisting of a decorative frame or panel that serves to divide a space screen v. 1.test or examine for the presence of disease or infection 2.examine methodically 3.examine in order to test suitability 4.project onto a screen for viewing 5.prevent from entering 6.separate with a riddle, as grain from chaff 7.protect, hide, or conceal from danger or harm