CLAPBOARD

clapboard, weatherboard, weatherboarding

(noun) a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below

clapboard

(verb) cover with clapboards

Source: WordNet® 3.1

---

Etymology 1

Noun

clapboard (countable and uncountable, plural clapboards)

A narrow board, usually thicker at one edge than the other, used as siding for houses and similar structures of frame construction.

(uncountable) Such boards, arranged horizontally and overlapping with thick edge down, collectively, as siding.

(archaic, UK) An oak board of a size used for barrel staves.

Synonyms

• weatherboard

Verb

clapboard (third-person singular simple present clapboards, present participle clapboarding, simple past and past participle clapboarded)

To cover with clapboards.

Etymology 2

Noun

clapboard (plural clapboards)

(film) A clapper board; 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.

Synonyms

• (film): clapper board, clapstick, slate, slate board, sync slate, sticks, board, marker

Source: Wiktionary

---

Clap"board, n.

1. A narrow board, thicker at one edge than at the other; -- used for weatherboarding the outside of houses. [U. S.]

2. A stave for a cask. [Eng.] Halliwell.

Clap"board, v. t.

Definition: To cover with clapboards; as, to clapboard the sides of a house. [U. S.] Bartlett.

Source: Webster’s Unabridged Dictionary 1913 Edition

---