roughsketch
nounUK /ˈrʌf skɛtʃ/
US /ˈrʌf skɛtʃ/
A quick, simple drawing that shows the main idea.
She drew a rough sketch of the house before painting it.
OTHER MEANINGS
2. A short, general description of something.
He gave a rough sketch of his travel plans.
3. An early, unfinished version of a design or idea.
The engineer showed a rough sketch of the new machine.
4. A brief outline of a story or speech.
The writer made a rough sketch of the plot before writing.