Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A long narrow board with one edge thicker than the other, overlapped horizontally to cover the outer walls of frame structures. Also called weatherboard.
  • transitive v. To cover with clapboards.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A narrow board, usually thicker at one edge than the other, used as siding for houses and similar structures of frame construction.
  • n. Such boards, arranged horizontally and overlapping with thick edge down, collectively, as siding.
  • n. An oak board of a size used for barrel staves.
  • v. To cover with clapboards.
  • n. 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.

from the GNU version of the Collaborative International Dictionary of English

  • n. A narrow board, thicker at one edge than at the other; -- used for weatherboarding the outside of houses.
  • n. A stave for a cask.
  • transitive v. To cover with clapboards.

from The Century Dictionary and Cyclopedia

  • To cover or sheathe with clapboards, as a house.
  • n. A long thin board, usually about 6 or 8 inches wide, used for covering the outside of a wooden building.
  • n. A roofing-board about 4 feet long by 8 inches wide, and thicker on one edge than on the other, rived from a log by splitting it from the center outward. Also called shake.
  • n. A stave for casks.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a long thin board with one edge thicker than the other; used as siding by lapping one board over the board below
  • v. cover with clapboards

Etymologies

Partial translation of Dutch klaphout : klappen, to split, crack + Middle Dutch holt, board.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Blend of clapper and board (Wiktionary)

Examples

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