|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
|Draper (drā'pər) Pronunciation Key
American astronomer who developed methods for photographing celestial objects and phenomena. He became the first to photograph a stellar spectrum (1872) and a nebula (1880).