weatherboard

Universal Words (also clapboard especially in AmE) noun 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 weatherboarded adjective weatherboarding noun [U]: the news will be followed by the weather forecast for tomorrow.