The Collaborative International Dictionary of English v.0.48:

Assemble \As*sem"ble\, v. i.
   To meet or come together, as a number of individuals; to
   convene; to congregate.                        --Dryden.
   [1913 Webster]

         The Parliament assembled in November.    --W. Massey.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Assemble \As*sem"ble\, v. i.
   To liken; to compare. [Obs.]
   [1913 Webster]

         Bribes may be assembled to pitch.        --Latimer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Assemble \As*sem"ble\, v. t. [imp. & p. p. Assembled; p. pr. &
   vb. n. Assembling.] [F. assembler, fr. LL. assimulare to
   bring together to collect; L. ad + simul together; akin to
   similis like, Gr. ? at the same time, and E. same. Cf.
   Assimilate, Same.]
   1. To collect into one place or body; to bring or call
      together; to convene; to congregate.
      [1913 Webster]

            Thither he assembled all his train.   --Milton.
      [1913 Webster]

            All the men of Israel assembled themselves. --1
                                                  Kings viii. 2.
      [1913 Webster]

   2. To collect and put together the parts of; as, to assemble
      a bicycle, watch, gun, or other manufactured article.
      [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

assemble
    v 1: create by putting components or members together; "She
         pieced a quilt"; "He tacked together some verses"; "They
         set up a committee" [syn: assemble, piece, put
         together, set up, tack, tack together] [ant: break
         apart, break up, disassemble, dismantle, take
         apart]
    2: collect in one place; "We assembled in the church basement";
       "Let's gather in the dining room" [syn: meet, gather,
       assemble, forgather, foregather]
    3: get people together; "assemble your colleagues"; "get
       together all those who are interested in the project";
       "gather the close family members" [syn: assemble, gather,
       get together]

Moby Thesaurus II by Grady Ward, 1.0:

195 Moby Thesaurus words for "assemble":
   accouple, accumulate, agglomerate, agglutinate, aggregate, aggroup,
   amass, articulate, associate, band, batch, bond, bracket, bridge,
   bridge over, bring together, build, build up, bulk, bunch,
   bunch together, bunch up, carve, cast, cement, chain, chase,
   chisel, clap together, clot, clump, cluster, collect, colligate,
   collocate, combine, come together, compare, compile, compose,
   compound, comprise, concatenate, concoct, conglobulate,
   conglomerate, congregate, conjoin, conjugate, connect, consist of,
   constitute, construct, convene, converge, convoke, copulate,
   corral, couple, cover, create, crowd, cull, cumulate, cut, date,
   devise, dig up, draw together, dredge up, drive together,
   elaborate, embody, embrace, encompass, engrave, enter into, erect,
   evolve, extrude, fabricate, fashion, flock together, flow together,
   forgather, form, formulate, found, frame, fudge together, fuse,
   gang around, gang up, gather, gather around, gather in,
   gather together, get in, get together, get up, glean, glue,
   go into, grave, group, grub, grub up, herd together, hive, horde,
   huddle, include, incorporate, indite, insculpture, join,
   join together, juxtapose, knot, lay together, league, levy, link,
   lump together, make, make up, manufacture, marry, marshal, mass,
   match, mature, meet, merge, merge in, mill, mix, mobilize, model,
   mold, muster, organize, pair, partner, patch together, pick,
   pick up, piece together, pluck, prefabricate, prepare, produce,
   put together, put up, raise, rake up, rally, rally around, rear,
   rendezvous, roll into one, round up, run up, scare up,
   scrape together, scrape up, sculp, sculpt, sculpture, seethe,
   set up, shape, solder, span, splice, stick together, stream,
   structure, summon, surge, swarm, synthesize, take in, take up,
   tape, throng, tie, unify, unite, unite in, weld, whip in, whomp up,
   write, yoke