Found 2 items, similar to clapperboard.
English → English (WordNet) Definition: clapperboard clapperboard n : photographic equipment used to synchronize sound and motion picture; boards held in front of a movie camera are banged together
English → English (gcide) Definition: clapperboard clapperboard \clap"per*board`\ (kl[a^]p"p[~e]r*b[=o]rd`), n. a device which synchronizes sound and picture while making a motion picture, consisting of boards held in front of a movie camera, which are are banged together. [WordNet 1.5]