#outline  the line that appears to bound an object
  supertype:  bounds__boundary  the line or plane indicating the limit or extent of something
  subtype:  coastline  the outline of a coast
  subtype:  silhouette  an outline of a solid object (as cast by its shadow)
  subtype:  skyline  the outline of objects seen against the sky

No statement uses or specializes outline; click here to add one.