The Collaborative International Dictionary of English v.0.48:

Delineate \De*lin"e*ate\, a. [L. delineatus, p. p. of delineare
   to delineate; de- + lineare to draw, fr. linea line. See
   Line.]
   Delineated; portrayed. [R.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Delineate \De*lin"e*ate\, v. t. [imp. & p. p. Delineated; p.
   pr. & vb. n. Delineating.]
   1. To indicate by lines drawn in the form or figure of; to
      represent by sketch, design, or diagram; to sketch out; to
      portray; to picture; in drawing and engraving, to
      represent in lines, as with the pen, pencil, or graver;
      hence, to represent with accuracy and minuteness. See
      Delineation.
      [1913 Webster]

            Adventurous to delineate nature's form. --Akenside.
      [1913 Webster]

   2. To portray to the mind or understanding by words; to set
      forth; to describe.
      [1913 Webster]

            Customs or habits delineated with great accuracy.
                                                  --Walpole.
      [1913 Webster]

WordNet (r) 3.0 (2006):

delineate
    adj 1: represented accurately or precisely [syn: delineated,
           represented, delineate] [ant: undelineated]
    v 1: show the form or outline of; "The tree was clearly defined
         by the light"; "The camera could define the smallest
         object" [syn: define, delineate]
    2: determine the essential quality of [syn: specify, define,
       delineate, delimit, delimitate]
    3: trace the shape of [syn: delineate, limn, outline]
    4: make a mark or lines on a surface; "draw a line"; "trace the
       outline of a figure in the sand" [syn: trace, draw,
       line, describe, delineate]
    5: describe in vivid detail

Moby Thesaurus II by Grady Ward, 1.0:

70 Moby Thesaurus words for "delineate":
   block in, block out, brief, bring to life, cartoon,
   catch a likeness, chalk, chalk out, character, characterize,
   charcoal, chart, color, contour, copy, crayon, crosshatch,
   dash off, daub, define, depict, describe, design, diagram, doodle,
   draft, draw, etch, evoke, express, give words to, hatch, hit off,
   image, interpret, limn, line, map, notate, outline, paint,
   paint a picture, pencil, picture, picturize, plan, portray, print,
   profile, register, render, represent, rough in, rough out, rub,
   schematize, scratch, scumble, set forth, shade, silhouette, sketch,
   stencil, symbolize, take a rubbing, tint, trace, trace out,
   trace over, write