Definition from Wiktionary, the free dictionary
weatherboard (plural weatherboards)
- (nautical) The windward side of a vessel.
- (nautical) A plank placed over an opening to keep out driven water.
- Any of a series of horizontal boards used to cover the exterior of a timber-framed building; clapboard.
nautical: plank placed over an opening
- (transitive) To cover with a weatherboard.