Definition of weatherboard noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈweðəbɔːd//
; NAmE NAmE//ˈweðərbɔːrd//
(also clapboard especially in North American English)
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one of a series of long, narrow, horizontal pieces of wood, each with one edge thicker than the other. They are fixed to the outside walls of a house with the bottom of one over the top of the one below, to cover the wall and protect it from rain and wind a weatherboard house