contour

Short definition from Wiktionary

Noun

1. 1
   An outline, boundary or border, usually of curved shape.
2. 2
   A line on a map or chart delineating those points which have the same altitude or other plotted quantity: a contour line or isopleth; (metonymically) the landform or its surface.
3. 3
   a speech sound which behaves as a single segment, but which makes an internal transition from one quality, place, or manner to another.
4. 4
   A general description giving the most important points.

Verb

1. 1
   To form a more or less curved boundary or border upon.
2. 2
   To mark with contour lines.
3. 3
   To practise the makeup technique of contouring.
4. 4
   To shape conditions regarding salient points.