To nail boards upon so as to lap one over another, in order to exclude rain, snow, etc.
Gwilt.
Webster 1828 Edition
Weather-board
WEATHER-BOARD
,
Noun.
That side of a ship which is towards the wind; the windward side. So in other words, weather signifies towards the wind or windward; as, in weather-bow, weather-braces, weather-gage, weather-lifts, weather-quarter, weather-shrouds, weather-side, weather-shore, &c.