2. (n.) In art: A line drawn by pencil, pen, graver, or the like, by which the boundary of a figure is indicated.
3. (n.) A sketch composed of such lines; the delineation of a figure without shading.
4. (n.) Fig.: A sketch of any scheme; a preliminary or general indication of a plan, system, course of thought, etc.; as, the outline of a speech.
5. (v. t.) To draw the outline of.
6. (v. t.) Fig.: To sketch out or indicate as by an outline; as, to outline an argument or a campaign.