- a soundproof compartment in a theater where a motion-picture projector is housed and from which the picture is projected on the screen.
- a compartment at the rear of or above an auditorium, in which spotlights and other lighting units are operated.
Origin of projection booth
First recorded in 1925–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018