#sail__canvas__canvass__sheet  a large piece of fabric (as canvas) by means of which wind is used to propel a sailing vessel
  supertype:  piece_of_cloth__piece_of_material  a piece of fabric
  subtype:  balloon_sail  crossjack  fore-and-aft_sail  foresail  headsail  mainsail  main-topsail  press_of_sail  royal  save-all.sail  skysail  square_sail  topgallant_sail  topsail
  part of:  sailing_vessel__sailingvessel__sailing_ship__sailingship  a vessel that is powered by the wind; often having several masts

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