1. [n]  preliminary drawing for later elaboration; "he made several studies before starting to paint"
2. [n]  short descriptive summary (of events)
3. [n]  a humorous or satirical drawing published in a newspaper or magazine
4. [n]  a brief literary description
5. [v]  describe roughly or briefly; "sketch the outline of the book"
6. [v]  make a sketch of

Sketch
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1. \Sketch\, n. [D. schets, fr. It. schizzo a sketch, a
   splash (whence also F. esquisse; cf. {Esquisse}.); cf. It.
   schizzare to splash, to sketch.]
   An outline or general delineation of anything; a first rough
   or incomplete draught or plan of any design; especially, in
   the fine arts, such a representation of an object or scene as
   serves the artist's purpose by recording its chief features;
   also, a preliminary study for an original work.
   Syn: Outline; delineation; draught; plan; design.
   Usage: {Sketch}, {Outline}, {Delineation}. An outline gives
          only the bounding lines of some scene or picture. A
          sketch fills up the outline in part, giving broad
          touches, by which an imperfect idea may be conveyed. A
          delineation goes further, carrying out the more
          striking features of the picture, and going so much
          into detail as to furnish a clear conception of the
          whole. Figuratively, we may speak of the outlines of a
          plan, of a work, of a project, etc., which serve as a
          basis on which the subordinate parts are formed, or of
          sketches of countries, characters, manners, etc.,
          which give us a general idea of the things described.
          --Crabb.
   

2. \Sketch\, v. t. [imp. & p. p. {Sketched}; p. pr. & vb. n.
   {Sketching}.] [Cf D. schetsen, It. schizzare. See {Sketch},
   n.]
   1. To draw the outline or chief features of; to make a rought
      of.
   2. To plan or describe by giving the principal points or
      ideas of.
   Syn: To delineate; design; draught; depict.
   

3. \Sketch\, v. i.
   To make sketches, as of landscapes.