sketch/skɛtʃ/

noun

1. a rough or unfinished drawing or painting, often made to assist in making a more finished picture.
   synonyms: drawing, preliminary drawing, outline, diagram, representation, delineation, design, plan, artist's impression, tracing, rough, underdrawing, cartoon, maquette
2. a short humorous play or performance, consisting typically of one scene in a revue or comedy programme.
   synonyms: skit, scene, piece, performance, act, item, turn, routine, number, playlet

verb

1. make a rough drawing of.
   synonyms: make a drawing of, draw a picture of, depict, portray, represent, delineate, pencil; rough out, outline