gobo

gobo [goh-boh] ExamplesWord Origin noun, plural go·bos, go·boes. Movies, Television.

a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.
a screen or sheet of sound-absorbent material for shielding a microphone from sounds coming from a particular direction.

Origin of gobo An Americanism dating back to 1925–30; origin uncertain Examples from the Web for gobo Historical Examples of gobo

But the third, it was my friend Gobo, could not by any means get away.

H. Rider Haggard

Then Gobo, feeling that the situation was getting strained, gave in.

H. Rider Haggard

So I sat there, looking fierce as a lion, and keeping the sight of my rifle in a dead line for Gobo’s ribs.

H. Rider Haggard

Accordingly we started in a crouching attitude, I first, Gobo holding on to my coat tails, and the other boy on to Gobo’s moocha.

H. Rider Haggard

However, I wriggled along somehow, and if it had not been for Gobo and his friend no doubt everything would have gone well.

H. Rider Haggard

British Dictionary definitions for gobo gobo noun plural -bos or -boes

a shield placed around a microphone to exclude unwanted sounds
a black screen placed around a camera lens, television lens, etc, to reduce the incident light

Word Origin for gobo C20: of unknown origin Word Origin and History for gobo

1930, American English, Hollywood movie set slang, of unknown origin, perhaps somehow from go-between.