n. 1. (Naut.) (a) That side of a vessel which is toward the wind; the windward side. (b) A piece of plank placed in a porthole, or other opening, to keep out water. [ 1913 Webster ]

2. (a) (Arch.) A board extending from the ridge to the eaves along the slope of the gable, and forming a close junction between the shingling of a roof and the side of the building beneath. (b) A clapboard or feather-edged board used in weatherboarding. [ 1913 Webster ]

n. (Arch.) (a) The covering or siding of a building, formed of boards lapping over one another, to exclude rain, snow, etc. (b) Boards adapted or intended for such use. [ 1913 Webster ]