weatherboard \weath"erboard`\, 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

weather-board \weath"er-board`\, v. t. arch.
   to nail boards upon so as to lap one over another, in order
   to exclude rain, snow, etc. --gwilt.
   1913 webster

weatherboard
     n 1: a long thin board with one edge thicker than the other; used
          as siding by lapping one board over the board below
          syn: clapboard, weatherboarding
     2: the side toward the wind syn: to windward, windward side,
         weather side
see also:
clapboard weatherboarding to windward windward side weather side 

72 moby thesaurus words for "weatherboard":
   beam, billet, board, boarding, brick, clapboard, cord, cordwood,
   deal, driftwood, face, firewood, glass, glaze, hardwood, lath,
   lathing, lathwork, log, lumber, panelboard, paneling, panelwork,
   paper, plank, planking, plyboard, plywood, pole, post, puncheon,
   revet, shake, sheathe, sheathing, sheathing board, sheeting,
   shingle, sideboard, siding, slab, slat, slate, softwood, splat,
   stave, stick, stick of wood, stone, stovewood, thatch,
   three-by-four, tile, timber, timbering, timberwork, two-by-four,
   veneer, wall in, wall up, wallpaper, weather, weather deck,
   weather helm, weather sheet, weather side, weather tack,
   weather wheel, windward, windward ebb, windward flood, wood