outliner

noun

1. a line bounding the limits of an object, showing its shape; contour line
2. a sketch showing only the contours of an object without use of shading
3. a general plan without detail
4. a summary of a subject, consisting of a systematic listing of its most important points

transitive verb outlined, outlining

1. to draw a profile of; draw in outline
2. to give or write an outline, or the main points, of