A thin narrow board, used to cover the sides of houses, and placed so as to overlap the one below it. In
England, according to Bailey's Dictionary, a clapboard is a thin board formed ready for the cooper's use, in order to make casks or vessels.
·noun A stave for a cask. II. Clapboard ·vt To cover with clapboards; as, to clapboard the sides of...
Webster's Dictionary of the English Language