Main Entry:

clap·board

Pronunciation:

\ˈkla-bərd; ˈkla(p)-ˌbȯrd\

Function:

noun

Etymology:

part translation of Dutch klaphout stave wood

Date:

circa 1520

1archaic : a size of board for making staves and wainscoting2: a narrow board usually thicker at one edge than the other used for siding3 \ˈklap-ˌbȯrd\ : a pair of hinged boards one of which has a slate with data identifying a piece of film and which are banged together in front of a motion-picture camera at the start of a take to facilitate editing —called also clapper board

— clapboard transitive verb