gobo1 Syllabification: (go·bo)Pronunciation: /ˈgōbō/Definition of gobo noun (plural gobos) a dark plate or screen used to shield a lens from light. Theater 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 British & World English dictionary