Lighting design: The concept that a designer creates to provide light onstage to support the mood or atmosphere of the play.
Light plot: The map that shows where all of your lighting instruments are placed on stage and where they will be lighting.
Lighting grid: Up above the stage, it is the system of bars and electricity that power the lights.
Lighting board: The control panel that powers the lights; when they turn on and off and at what intensity.
Cyclorama: The large white “sheet” at the back of the stage that can be lit or projected on.
Backlight: Lighting from the back.
Sidelight: Lighting from the side.
Top light: Lighting from above.
Front light: Lighting from the front.
Footlight: Lighting that is placed on the floor in the front.
Spotlight: A single source of light focused on a single subject.
Fill light: Lighting source that adds lighting in and around the set/scenery/stage.
Wash: A large group of lighting that can “wash” the stage in light that you bring up at once together.
Lighting angle: The angle of the lighting instrument in relation to the subject; usually 45%.
Gobo (or patter): A pattern (in the olden days it was a circle of metal) that blocks light to give you a shape onstage.
Gel (or color gel): The color that you want the instrument to throw onstage (or light onstage).