The Collaborative International Dictionary of English v.0.48:

Arrange \Ar*range"\, v. t. [imp. & p. p. Arranged; p. pr. &
   vb. n. Arranging.] [OE. arayngen, OF. arengier, F.
   arranger, fr. a (L. ad) + OF. rengier, rangier, F. ranger.
   See Range, v. t.]
   1. To put in proper order; to dispose (persons, or parts) in
      the manner intended, or best suited for the purpose; as,
      troops arranged for battle.
      [1913 Webster]

            So [they] came to the market place, and there he
            arranged his men in the streets.      --Berners.
      [1913 Webster]

            [They] were beginning to arrange their hampers.
                                                  --Boswell.
      [1913 Webster]

            A mechanism previously arranged.      --Paley.
      [1913 Webster]

   2. To adjust or settle; to prepare; to determine; as, to
      arrange the preliminaries of an undertaking.
      [1913 Webster]

   Syn: Adjust; adapt; range; dispose; classify.
        [1913 Webster]

WordNet (r) 3.0 (2006):

arrange
    v 1: put into a proper or systematic order; "arrange the books
         on the shelves in chronological order" [syn: arrange,
         set up] [ant: disarrange]
    2: make arrangements for; "Can you arrange a meeting with the
       President?" [syn: arrange, fix up]
    3: plan, organize, and carry out (an event); "the neighboring
       tribe staged an invasion" [syn: stage, arrange]
    4: set (printed matter) into a specific format; "Format this
       letter so it can be printed out" [syn: format, arrange]
    5: arrange attractively; "dress my hair for the wedding" [syn:
       dress, arrange, set, do, coif, coiffe,
       coiffure]
    6: adapt for performance in a different way; "set this poem to
       music" [syn: arrange, set]
    7: arrange thoughts, ideas, temporal events; "arrange my
       schedule"; "set up one's life"; "I put these memories with
       those of bygone times" [syn: arrange, set up, put,
       order]

Moby Thesaurus II by Grady Ward, 1.0:

151 Moby Thesaurus words for "arrange":
   accommodate, adapt, adjust, align, alphabetize, analyze, array,
   assort, blend, blueprint, break down, bring about, bring to terms,
   calculate, cast, catalog, categorize, chart, choreograph, class,
   classify, clear for action, clear the decks, close, close with,
   codify, compose, concert, conclude, contrive, cool off, cure,
   cut out, decide, deploy, design, determine, devise, digest,
   dispose, divide, dope out, dress, figure, file, fix, fix up,
   forecast, form, frame, get ready, grade, group, harmonize,
   hierarchize, index, instrument, instrumentate, integrate, intend,
   lay out, lay plans, line up, list, make a projection,
   make an adaptation, make arrangements, make peace,
   make preparations, make ready, make up, manipulate, map out,
   marshal, melodize, methodize, mobilize, musicalize, normalize,
   orchestrate, order, organize, pacify, pigeonhole, place, plan,
   plan ahead, position, prearrange, predetermine, prep, prepare,
   pretreat, process, program, project, provide, put in order,
   put in shape, put to music, put to rights, quiet, range, rank,
   rate, rationalize, ready, ready up, reduce to order, regularize,
   regulate, right, routinize, schedule, schematize, scheme, score,
   set, set in order, set out, set to music, set to rights, set up,
   settle, settle preliminaries, settle with, shape, sort, sort out,
   standardize, straighten out, structure, subdivide, symphonize,
   synthesize, systematize, tabulate, tan, tranquilize, transcribe,
   transpose, treat, trim, try out, type, unify, unsnarl,
   whip into shape, work out, work up, write