The Collaborative International Dictionary of English v.0.48:

Configuration \Con*fig`u*ra"tion\, n. [L. configuratio.]
   1. Form, as depending on the relative disposition of the
      parts of a thing; shape; figure.
      [1913 Webster]

            It is the variety of configurations [of the mouth] .
            . . which gives birth and origin to the several
            vowels.                               --Harris.
      [1913 Webster]

   2. (Astrol.) Relative position or aspect of the planets; the
      face of the horoscope, according to the relative positions
      of the planets at any time.
      [1913 Webster]

            They [astrologers] undertook . . . to determine the
            course of a man's character and life from the
            configuration of the stars at the moment of his
            birth.                                --Whewell.
      [1913 Webster]

WordNet (r) 3.0 (2006):

configuration
    n 1: an arrangement of parts or elements; "the outcome depends
         on the configuration of influences at the time" [syn:
         configuration, constellation]
    2: any spatial attributes (especially as defined by outline);
       "he could barely make out their shapes" [syn: shape,
       form, configuration, contour, conformation]

Moby Thesaurus II by Grady Ward, 1.0:

123 Moby Thesaurus words for "configuration":
   Platonic form, Platonic idea, aesthetic form, angle, archetype,
   aroma, art form, aspect, attribute, badge, brand, build, cachet,
   cast, character, characteristic, conformation, constellation,
   contour, cut, delineation, differentia, differential,
   distinctive feature, earmark, effect, eidolon, facet, fashion,
   feature, features, figuration, figure, figure-ground, flavor, form,
   format, formation, frame, framework, genre, gestalt, guise, gust,
   hallmark, idiocrasy, idiosyncrasy, image, imago, impress,
   impression, index, individualism, inner form, keynote, layout,
   light, likeness, lineaments, lines, look, main features, make,
   makeup, manner, mannerism, mark, marking, matrix, modality, mode,
   model, mold, nature, odor, outline, particularity, pattern,
   peculiarity, phase, phasis, profile, property, prototype, quality,
   quirk, reference, regard, relief, respect, savor, seal, seeming,
   semblance, set, shape, shapes, side, significant form, silhouette,
   simulacrum, singularity, skeleton, slant, smack, specialty, stamp,
   structure, style, taint, tang, taste, token, total effect,
   tournure, trait, trick, turn, twist, type, view, viewpoint, wise