Clapboard
WordNet
noun
(1) A long thin board with one edge thicker than the other; used as siding by lapping one board over the board below
verb
(2) Cover with clapboards
WiktionaryText
Noun
- A narrow board, usually thicker at one edge than the other, used as siding for houses and similar structures of frame construction.
- }
- Such boards, arranged horizontally and overlapping with thick edge down, collectively, as siding.
- A clapperboard (used in film production).