n the display of a motion picture n fabric of metal or plastic mesh n the act of concealing the existence of something by obstructing the view of it n testing objects or persons in order to identify those with particular characteristics v test or examine for the presence of disease or infection v examine methodically v examine in order to test suitability v project onto a screen for viewing v prevent from entering v separate with a riddle, as grain from chaff v protect, hide, or conceal from danger or harm