Noun: clapboard kla-bu(r)d or 'klap,bord
- A long thin board with one edge thicker than the other; used as siding by lapping one board over the board below
"The old farmhouse was clad in traditional clapboard";
- weatherboard, weatherboarding
Derived forms: clapboarded, clapboarding, clapboards
Type of: cover, siding [N. Amer]
Encyclopedia: Clapboard