The Collaborative International Dictionary of English v.0.48:

Shut \Shut\, v. i.
   To close itself; to become closed; as, the door shuts; it
   shuts hard.
   [1913 Webster]

   To shut up, to cease speaking. [Colloq.] --T. Hughes.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shut \Shut\, a.
   1. Closed or fastened; as, a shut door.
      [1913 Webster]

   2. Rid; clear; free; as, to get shut of a person. [Now
      dialectical or local, Eng. & U.S.] --L'Estrange.
      [1913 Webster]

   3. (Phon.)
      (a) Formed by complete closure of the mouth passage, and
          with the nose passage remaining closed; stopped, as
          are the mute consonants, p, t, k, b, d, and hard g.
          --H. Sweet.
      (b) Cut off sharply and abruptly by a following consonant
          in the same syllable, as the English short vowels,
          [a^], [e^], [i^], [o^], [u^], always are.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shut \Shut\, v. t. [imp. & p. p. Shut; p. pr. & vb. n.
   Shutting.] [OE. shutten, schutten, shetten, schitten, AS.
   scyttan to shut or lock up (akin to D. schutten, G.
   sch["u]tzen to protect), properly, to fasten with a bolt or
   bar shot across, fr. AS. sce['o]tan to shoot. [root]159. See
   Shoot.]
   1. To close so as to hinder ingress or egress; as, to shut a
      door or a gate; to shut one's eyes or mouth.
      [1913 Webster]

   2. To forbid entrance into; to prohibit; to bar; as, to shut
      the ports of a country by a blockade.
      [1913 Webster]

            Shall that be shut to man which to the beast
            Is open?                              --Milton.
      [1913 Webster]

   3. To preclude; to exclude; to bar out. "Shut from every
      shore." --Dryden.
      [1913 Webster]

   4. To fold together; to close over, as the fingers; to close
      by bringing the parts together; as, to shut the hand; to
      shut a book.
      [1913 Webster]

   To shut in.
      (a) To inclose; to confine. "The Lord shut him in." --Cen.
          vii. 16.
      (b) To cover or intercept the view of; as, one point shuts
          in another.

   To shut off.
      (a) To exclude.
      (b) To prevent the passage of, as steam through a pipe, or
          water through a flume, by closing a cock, valve, or
          gate.

   To shut out, to preclude from entering; to deny admission
      to; to exclude; as, to shut out rain by a tight roof.

   To shut together, to unite; to close, especially to close
      by welding.

   To shut up.
      (a) To close; to make fast the entrances into; as, to shut
          up a house.
      (b) To obstruct. "Dangerous rocks shut up the passage."
          --Sir W. Raleigh.
      (c) To inclose; to confine; to imprison; to fasten in; as,
          to shut up a prisoner.
          [1913 Webster]

                Before faith came, we were kept under the law,
                shut up unto the faith which should afterwards
                be revealed.                      --Gal. iii.
                                                  23.
          [1913 Webster]
      (d) To end; to terminate; to conclude.
          [1913 Webster]

                When the scene of life is shut up, the slave
                will be above his master if he has acted better.
                                                  --Collier.
          [1913 Webster]
      (e) To unite, as two pieces of metal by welding.
      (f) To cause to become silent by authority, argument, or
          force.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shut \Shut\, n.
   The act or time of shutting; close; as, the shut of a door.
   [1913 Webster]

         Just then returned at shut of evening flowers.
                                                  --Milton.
   [1913 Webster]

   2. A door or cover; a shutter. [Obs.] --Sir I. Newton.
      [1913 Webster]

   3. The line or place where two pieces of metal are united by
      welding.
      [1913 Webster]

   Cold shut, the imperfection in a casting caused by the
      flowing of liquid metal upon partially chilled metal;
      also, the imperfect weld in a forging caused by the
      inadequate heat of one surface under working.
      [1913 Webster]

WordNet (r) 3.0 (2006):

shut
    adj 1: not open; "the door slammed shut" [syn: shut, unopen,
           closed] [ant: open, unfastened]
    2: used especially of mouth or eyes; "he sat quietly with closed
       eyes"; "his eyes were shut against the sunlight" [syn:
       closed, shut] [ant: open, opened]
    v 1: move so that an opening or passage is obstructed; make
         shut; "Close the door"; "shut the window" [syn: close,
         shut] [ant: open, open up]
    2: become closed; "The windows closed with a loud bang" [syn:
       close, shut] [ant: open, open up]
    3: prevent from entering; shut out; "The trees were shutting out
       all sunlight"; "This policy excludes people who have a
       criminal record from entering the country" [syn: exclude,
       keep out, shut out, shut] [ant: admit, include,
       let in]

Moby Thesaurus II by Grady Ward, 1.0:

119 Moby Thesaurus words for "shut":
   ban, bang, bar, barricade, batten, batten down, blank, blind,
   blind-alley, block out, bolt, bolted, bottle up, box in, button,
   button up, cease, cecal, choke, choke off, choked, choked off,
   clap, close, close down, close off, close up, closed, conceal,
   confine, constrict, constricted, contain, contract, contracted,
   coop up, cover, cut, cut off, cut out, dead, dead-end, debar,
   disallow, discontinue, douse, eliminate, exclude, fasten, fastened,
   fence in, fold, fold up, gag, halt, hide, immure, imprison,
   incarcerate, intern, isolate, jail, keep away, keep in, keep out,
   keep quiet, key, kill, latch, leave off, lock, lock out, lock up,
   locked up, mask, mute, occlude, padlock, pen, plumb, prohibit,
   put to, quieten, screen, seal, seal off, seal up, seclude, secure,
   segregate, send to Coventry, separate, sequester, shush, shut down,
   shut in, shut off, shut out, shut the door, shut up, silence, slam,
   snap, squeeze shut, squeezed shut, stifle, stop, strangle,
   strangulated, suspend, switch off, turn off, unopen, unopened,
   unvented, unventilated, veil, zip up, zipper