gobo1Pronunciation: /ˈgəʊbəʊ/Definition of gobo noun (plural gobos) a dark plate or screen used to shield a lens from light. Theatre a partial screen used in front of a spotlight to project a shape. a shield used to mask a microphone from extraneous noise. Origin: 1930s: of unknown origin, perhaps from go betweengobo in other Oxford dictionaries Definition of gobo in the US English dictionary