¹silhouette

outline, contour, profile, silhouette mean the line that bounds and gives form to something. outline applies to a line marking the outer limits or edges of a body or mass <traced the outline of his hand>. contour stresses the quality of an outline or a bounding surface as being smooth, jagged, curving, or sharply angled <a car with flowing contours>. profile suggests a varied and sharply defined outline against a lighter background <a portrait of her face in profile>. silhouette suggests a shape especially of a head or figure with all detail blacked out in shadow leaving only the outline clearly defined <photograph in silhouette against a bright sky>.

A man named Étienne de Silhouette was once in charge of the finances of France. He was a miser who did not like to spend his money or the country's money. According to one story he was too cheap to buy paintings for the walls of his mansion, and so he made simple outline drawings to hang in place of paintings. In French and in English silhouette still means “an outline drawing.”