What does clapboard mean?
Clapboard refers most commonly to a long, narrow board whose upper edge is thinner than its lower edge, allowing boards to be nailed horizontally in overlapping rows that shed rain from a building's exterior. This method of wooden wall covering became the signature look of colonial and early American architecture, particularly the white-painted clapboard houses of New England, where it connotes tradition, simplicity, and coastal charm. In British English, by contrast, the word usually means something entirely different: the hinged clapper board held up before a movie camera and snapped shut to mark the start of a take, helping editors sync picture and sound. Clapboard can also function as a verb meaning to cover a structure with such boards. Whether describing a farmhouse's weathered facade or a film set's opening slate, the word carries a distinctly craft-oriented, somewhat old-fashioned character.
A long, thin board with one edge thicker than the other, fixed horizontally in overlapping rows to cover exterior walls; in British English, a hinged clapper board used in filming.
"They replaced the rotting clapboard with cedar siding before winter set in."
American usage overwhelmingly favors the building-material sense; British usage favors the film-production sense.
To cover or clad a building with clapboards.
"The carpenters planned to clapboard the entire barn over the summer."
Rare and chiefly technical or regional.
Used when referring to individual boards; the material or style as a whole is typically uncountable ('the house is clad in clapboard').
"Loose clapboards rattled in the wind until the painter nailed them back down."
New England's iconic white-clapboard look was born of practicality: thin riven oak boards overlapped like shingles so rain would simply sheet off the walls.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of clapboard
Clapboard derives from an earlier form, 'clapboard' or 'clap-board', recorded in English by the early seventeenth century, likely from the Dutch 'klaphout' — literally 'split board', from the splitting or 'clapping' of logs into thin boards along the grain. It entered widespread use in colonial North America, where settlers adopted the technique for cheap, weather-tight house cladding. The word shares its Germanic root 'clap-' with related terms such as 'clap' and 'clapper', reflecting the original action of splitting wood.
Related word forms
How clapboard is actually used
In American English 'clapboard' almost always means the wall siding and is strongly associated with traditional colonial and New England architecture. In British English it more commonly denotes the film-set clapper board, which Americans call a 'slate' or 'clapper'. The verb sense is rare and mainly technical.
Easily confused with clapboard
A clapper is the hinged striking piece on a bell or the top arm of a film slate, whereas clapboard is either the wall-siding board or, in British usage, the whole slate device itself.
Shingles are small wooden or asphalt tiles applied in overlapping courses often on roofs and walls, while clapboards are long horizontal boards used specifically for wall sheathing.