What is the meaning of contour?

noun

• A line drawn on a map connecting points of equal height.
  • synonyms: contour line
• Any spatial attributes (especially as defined by outline. )
  • usage: "he could barely make out their shapes"
  • synonyms: shape, form, configuration, conformation
• A feature (or the order or arrangement of features) of anything having a complex structure.
  • usage: "the contours of the melody"; "it defines a major contour of this administration"

verb

• Form the contours of. .