outline

noun
UK /ˈaʊtlaɪn/
US /ˈaʊtlaɪn/

A line that shows the shape of something.

She drew the outline of a cat before coloring it in.


OTHER MEANINGS

2. A short plan that lists the main ideas of something.

He wrote an outline for his story before starting.

3. To describe the main points of something.

The teacher outlined the steps of the experiment.

4. To draw the outer edge of something.

The artist outlined the tree in black ink.