The Collaborative International Dictionary of English v.0.48:

Drapery \Dra"per*y\, n.; pl. Draperies. [F. draperie.]
   1. The occupation of a draper; cloth-making, or dealing in
      cloth. --Bacon.
      [1913 Webster]

   2. Cloth, or woolen stuffs in general.
      [1913 Webster]

            People who ought to be weighing out grocery or
            measuring out drapery.                --Macaulay.
      [1913 Webster]

   3. A textile fabric used for decorative purposes, especially
      when hung loosely and in folds carefully disturbed; as:
      (a) Garments or vestments of this character worn upon the
          body, or shown in the representations of the human
          figure in art.
      (b) Hangings of a room or hall, or about a bed.
          [1913 Webster]

                Like one that wraps the drapery of his couch
                About him, and lies down to pleasant dreams.
                                                  --Bryant.
          [1913 Webster]

                All the decent drapery of life is to be rudely
                torn off.                         --Burke.
          [1913 Webster]

   Casting of draperies. See under Casting.
      [1913 Webster]

            The casting of draperies . . . is one of the most
            important of an artist's studies.     --Fairholt.
      [1913 Webster]

WordNet (r) 3.0 (2006):

drapery
    n 1: hanging cloth used as a blind (especially for a window)
         [syn: curtain, drape, drapery, mantle, pall]
    2: cloth gracefully draped and arranged in loose folds

Moby Thesaurus II by Grady Ward, 1.0:

180 Moby Thesaurus words for "drapery":
   aglet, aigrette, apparel, applique, arabesque, arras, array,
   attire, awning, batik, beach umbrella, beading, beaten work,
   bedizenment, blanket, blind, bob, bouquet, boutonniere, bow, bugle,
   chandelier, chaplet, cloak, cloth, clothes, clothing, coat,
   coattail, coronal, corsage, costume, cover, coverage, covering,
   covert, coverture, cowl, cowling, crown, curtain, cuspidation,
   cutwork, damascene, damask, diaper, diapering, drape, dress,
   dressing, drop, duds, earring, egret, embroidery, epaulet, etoffe,
   fabric, fancywork, fashion, fatigues, feather, feathers, felt,
   festoon, fig, filigree, fillet, finial, flap, foliage, foliation,
   fretwork, fringe, frog, garb, garland, garments, gear, goods,
   guise, habiliment, habit, hammock, hanging, helix, hood, housing,
   icicle, imbrication, inlay, investiture, investment, lace,
   lacework, lappet, light shield, linen, mantle, mask, material,
   metalwork, motif, napery, nosegay, openwork, pall, panache,
   panelwork, parasol, parquetry, pendulum, pigtail, plumb bob, plume,
   pom-pom, posy, queue, quilting, rag, rags, raiment, robes, rosette,
   ruffle, screen, scroll, sequin, shade, shader, shadow, shelter,
   shield, shroud, silk, skirt, snood, spangle, spiral, sportswear,
   stalactite, striping, stuff, style, sunblind, sunshade, swing,
   tail, tailpiece, tapestry, tassel, textile, textile fabric,
   texture, threads, tippet, tissu, tissue, togs, toilette, tooling,
   tracery, trail, train, trim, umbrella, valance, veil, vestment,
   vesture, vignette, wattle, wear, wearing apparel, weave, web, weft,
   woof, wool, wreath