The Collaborative International Dictionary of English v.0.48:

Garb \Garb\ (g[aum]rb), n. [OF. garbe looks, countenance, grace,
   ornament, fr. OHG. garaw[imac], garw[imac], ornament, dress.
   akin to E. gear. See Gear, n.]
   1.
      (a) Clothing in general.
      (b) The whole dress or suit of clothes worn by any person,
          especially when indicating rank or office; as, the
          garb of a clergyman or a judge.
      (c) Costume; fashion; as, the garb of a gentleman in the
          16th century.
          [1913 Webster]

   2. External appearance, as expressive of the feelings or
      character; looks; fashion or manner, as of speech.
      [1913 Webster]

            You thought, because he could not speak English in
            the native garb, he could not therefore handle an
            English cudgel.                       --Shak.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Garb \Garb\ (g[aum]rb), n. [F. gerbe, OF. also garbe, OHG.
   garba, G. garbe; cf. Skr. g[.r]bh to seize, E. grab.] (Her.)
   A sheaf of grain (wheat, unless otherwise specified).
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Garb \Garb\, v. t.
   To clothe; array; deck.
   [1913 Webster]

         These black dog-Dons
         Garb themselves bravely.                 --Tennyson.
   [1913 Webster]

WordNet (r) 3.0 (2006):

garb
    n 1: clothing of a distinctive style or for a particular
         occasion; "formal attire"; "battle dress" [syn: attire,
         garb, dress]
    v 1: provide with clothes or put clothes on; "Parents must feed
         and dress their child" [syn: dress, clothe, enclothe,
         garb, raiment, tog, garment, habilitate, fit
         out, apparel] [ant: discase, disrobe, peel,
         strip, strip down, uncase, unclothe, undress]

Moby Thesaurus II by Grady Ward, 1.0:

92 Moby Thesaurus words for "garb":
   air, apparel, array, attire, bearing, bedeck, bedizenment, bedrape,
   brow, bundle up, carriage, cast, cast of countenance, clad, clothe,
   clothes, clothing, color, complexion, costume, countenance, deck,
   demeanor, dight, drape, drapery, dress, dressing, dud, duds,
   enclothe, endue, enrobe, enshroud, envelop, enwrap, face,
   facial appearance, fashion, fatigues, favor, feathers, feature,
   features, fig, garment, garments, gear, guise, habiliment,
   habilitate, habit, invest, investiture, investment, lap,
   lineaments, linen, lines, looks, mien, muffle up, physiognomy,
   port, posture, presence, rag out, rags, raiment, robe, robes,
   sheathe, shroud, sportswear, stance, style, swaddle, swathe,
   threads, tire, togs, toilette, traits, trim, turn, vestment,
   vesture, visage, wear, wearing apparel, wrap, wrap up