clapperboard
Clapperboard (noun) means a hinged board used at the start of a film take, clapped shut to help line up the picture and sound during editing. Example: “The assistant held up the clapperboard and called out the scene number.”
How to use clapperboard
Learner’s notesIn plain EnglishIt is the board with a hinged top that gets clapped shut at the start of filming to help sync the sound and picture later.
This is everyday film-industry vocabulary, used on set and in production discussions.
The clap itself is what gives editors a precise point to line up sound with picture.
Trace the full origin ↓Fill the gap
Can you complete this real example?
The assistant held up the _____ and called out the scene number.
Etymology
Clapperboard is formed by joining clapper to board, describing the hinged clapping piece fixed to a board.