#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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