a dark plate or screen used to shield a lens from light 透镜遮光片 ■(Theatre)a partial screen used in front of a spotlight to project a shape (戏剧)遮光屏 ■a shield used to mask a microphone from extraneous noise (扬声器上的)杂音过滤布
语源
1930s: of unknown origin, perhaps from go between
gobo2 [ˈgəʊbəʊ] noun
[mass noun]a vegetable root used in Japanese and other oriental cookery 牛蒡(日本和其他东方国家烹饪用的菜根)