#board.lumber__plank  a stout length of sawn timber; made in a wide variety of sizes and used for many purposes
  supertype:  lumber__timber  the wood of trees cut and prepared for use as building material
  subtype:  matchboard  skid.board  strake  chipboard  deal.board
  part:  knot.wood  a hard cross-grained round piece of wood in a board where a branch emerged; "the saw buckled when it hit a knot"
  part:  knothole  a hole in a board where a knot came out

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