noun Download 🔗Share A device used in film production, having hinged boards that are brought together with a clap, used to synchronize picture and sound at the start of each take of a motion picture or other video production. Examples : "The director yelled "Action!" and the assistant slammed the clapperboard together with a loud clap, marking the beginning of the scene. " media entertainment technology sound device communication Chat with AIVocabulary GamePractice Reading