Merriam-Webster's Collegiate® Dictionary, 11th Edition
SKETCH
I. noun
Etymology: Dutch schets, from Italian schizzo, literally, splash, from schizzare to splash, of imitative origin
Date: 1668
1. a rough drawing representing the chief features of an object or scene and often made as a preliminary study, a tentative draft (as for a literary work), a brief description (as of a person) or outline,
3. a short literary composition somewhat resembling the short story and the essay but intentionally slight in treatment, discursive in style, and familiar in tone, a short instrumental composition usually for piano, a slight theatrical piece having a single scene,
II. verb
Date: 1694
transitive verb to make a sketch, rough draft, or outline of, intransitive verb to draw or paint a sketch, sketcher noun