Definify.com
Webster 1913 Edition
Clapboard
Clap′board
,Noun.
1.
A narrow board, thicker at one edge than at the other; – used for weatherboarding the outside of houses.
[U. S.]
2.
A stave for a cask.
[Eng.]
Halliwell.
Clap′board
,Verb.
T.
To cover with clapboards;
as, to
. clapboard
the sides of a house[U. S.]
Bartlett.