☆ a long, narrow board with one edge thicker than the other, used as siding
transitive verb
to cover with clapboards
See clapboard in American Heritage Dictionary 4
(klăbˈərd, klăpˈbôrdˌ, -bōrdˌ)
noun
A long narrow board with one edge thicker than the other, overlapped horizontally to cover the outer walls of frame structures. Also called weatherboard.