* Art: The artist used charcoal to sketch a portrait of the old woman.
* Planning: I sketched out a plan for the project before starting to write.
* Drawing: My son loves to sketch dinosaurs in his notebook.
* Outline: The author sketched the main points of the argument in her introduction.
* Music: The band sketched out the new song during their rehearsal.
* General idea: This is just a sketch of what we're hoping to achieve.
* Briefly describe: Can you sketch the scene you witnessed?
The meaning of "sketch" will depend on the context of the sentence. Let me know if you'd like to see more examples using a specific meaning!