Noun
A device consisting of a board on which information about a film being recorded is noted, and a hinged piece which is brought down on the board with a clap at the start and end of each take of the film; it is used to synchronize picture and sound during editing.
Verb
To use a clapperboard, especially to clap it to start a film take.
Noun
photographic equipment used to synchronize sound and motion picture; boards held in front of a movie camera are banged together
- Broader terms