An example of to outline is to write the important details of a planned novel before you write it.
An example of to outline is trace the shape of the cat before filling in the details in a painting.
An example of an outline is the taped outline of a body in a crime scene.
An example of an outline is the list of topics to be covered in the report.
An example of an outline is the notes on cards for a speech.
Could see the outlines of an animal in the dark.
Outlined the major provisions of the tax bill.
His face was outlined on the lampshade.
Wikipedia items featuring books usually outline them after giving their background.