Definition & Meaning of "clapperboard"

What is a "clapperboard"?

A clapperboard, also known as a slate, is a tool used in film and video production to organize and identify scenes and takes. It features a board with a movable stick at the top that is snapped to create a distinct sound. The board displays information such as the scene number, take number, and production details. By showing this board in front of the camera at the beginning of each take, it helps synchronize audio and video, and aids in organizing footage for editing.