Outline noun – A line that traces the outer limits of an object or surface. Idea and outline are semantically related. Sometimes you can use "Idea" instead a noun "Outline". Nearby Words: outlined, outlining
This is a common publishing phenomenon wherein a bestselling author's name is placed prominently on the front cover in order to attract the sales that author normally generates, wherein his or her contribution may have been limited to an idea or an outline at most.