The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\, n. [AS. bolt; akin to Icel. bolti, Dan. bolt, D.
   bout, OHG. bolz, G. bolz, bolzen; of uncertain origin.]
   1. A shaft or missile intended to be shot from a crossbow or
      catapult, esp. a short, stout, blunt-headed arrow; a
      quarrel; an arrow, or that which resembles an arrow; a
      dart.
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            Look that the crossbowmen lack not bolts. --Sir W.
                                                  Scott.
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            A fool's bolt is soon shot.           --Shak.
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   2. Lightning; a thunderbolt.
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   3. A strong pin, of iron or other material, used to fasten or
      hold something in place, often having a head at one end
      and screw thread cut upon the other end.
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   4. A sliding catch, or fastening, as for a door or gate; the
      portion of a lock which is shot or withdrawn by the action
      of the key.
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   5. An iron to fasten the legs of a prisoner; a shackle; a
      fetter. [Obs.]
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            Away with him to prison!
            lay bolts enough upon him.            --Shak.
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   6. A compact package or roll of cloth, as of canvas or silk,
      often containing about forty yards.
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   7. A bundle, as of oziers.
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   Bolt auger, an auger of large size; an auger to make holes
      for the bolts used by shipwrights.

   Bolt and nut, a metallic pin with a head formed upon one
      end, and a movable piece (the nut) screwed upon a thread
      cut upon the other end. See B, C, and D, in illust. above.
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   Note: See Tap bolt, Screw bolt, and Stud bolt.
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The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\, v. t. [imp. & p. p. Bolted; p. pr. & vb. n.
   Bolting.]
   1. To shoot; to discharge or drive forth.
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   2. To utter precipitately; to blurt or throw out.
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            I hate when Vice can bolt her arguments. --Milton.
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   3. To swallow without chewing; as, to bolt food; often used
      with down.
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   4. (U. S. Politics) To refuse to support, as a nomination
      made by a party to which one has belonged or by a caucus
      in which one has taken part.
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   5. (Sporting) To cause to start or spring forth; to dislodge,
      as conies, rabbits, etc.
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   6. To fasten or secure with, or as with, a bolt or bolts, as
      a door, a timber, fetters; to shackle; to restrain.
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            Let tenfold iron bolt my door.        --Langhorn.
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            Which shackles accidents and bolts up change.
                                                  --Shak.
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The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\, adv.
   In the manner of a bolt; suddenly; straight; unbendingly.
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         [He] came bolt up against the heavy dragoon.
                                                  --Thackeray.
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   Bolt upright.
   (a) Perfectly upright; perpendicular; straight up;
       unbendingly erect. --Addison.
   (b) On the back at full length. [Obs.] --Chaucer.
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The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\, n. [From Bolt, v. i.]
   1. A sudden spring or start; a sudden spring aside; as, the
      horse made a bolt.
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   2. A sudden flight, as to escape creditors.
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            This gentleman was so hopelessly involved that he
            contemplated a bolt to America -- or anywhere.
                                                  --Compton
                                                  Reade.
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   3. (U. S. Politics) A refusal to support a nomination made by
      the party with which one has been connected; a breaking
      away from one's party.
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The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\ (b[=o]lt; 110), v. i.
   1. To start forth like a bolt or arrow; to spring abruptly;
      to come or go suddenly; to dart; as, to bolt out of the
      room.
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            This Puck seems but a dreaming dolt, . . .
            And oft out of a bush doth bolt.      --Drayton.
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   2. To strike or fall suddenly like a bolt.
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            His cloudless thunder bolted on their heads.
                                                  --Milton.
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   3. To spring suddenly aside, or out of the regular path; as,
      the horse bolted.
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   4. (U.S. Politics) To refuse to support a nomination made by
      a party or a caucus with which one has been connected; to
      break away from a party.
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The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\, v. t. [imp. & p. p. Bolted; p. pr. & vb. n.
   Bolting.] [OE. bolten, boulten, OF. buleter, F. bluter, fr.
   Ll. buletare, buratare, cf. F. bure coarse woolen stuff; fr.
   L. burrus red. See Borrel, and cf. Bultel.]
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   1. To sift or separate the coarser from the finer particles
      of, as bran from flour, by means of a bolter; to separate,
      assort, refine, or purify by other means.
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            He now had bolted all the flour.      --Spenser.
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            Ill schooled in bolted language.      --Shak.
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   2. To separate, as if by sifting or bolting; -- with out.
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            Time and nature will bolt out the truth of things.
                                                  --L'Estrange.
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   3. (Law) To discuss or argue privately, and for practice, as
      cases at law. --Jacob.
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   To bolt to the bran, to examine thoroughly, so as to
      separate or discover everything important. --Chaucer.
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            This bolts the matter fairly to the bran. --Harte.
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            The report of the committee was examined and sifted
            and bolted to the bran.               --Burke.
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The Collaborative International Dictionary of English v.0.48:

Bolt \Bolt\, n.
   A sieve, esp. a long fine sieve used in milling for bolting
   flour and meal; a bolter. --B. Jonson.
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WordNet (r) 3.0 (2006):

bolt
    adv 1: in a rigid manner; "the body was rigidly erect"; "he sat
           bolt upright" [syn: rigidly, stiffly, bolt]
    2: directly; "he ran bang into the pole"; "ran slap into her"
       [syn: bang, slap, slapdash, smack, bolt]
    n 1: a discharge of lightning accompanied by thunder [syn:
         thunderbolt, bolt, bolt of lightning]
    2: a sliding bar in a breech-loading firearm that ejects an
       empty cartridge and replaces it and closes the breech
    3: the part of a lock that is engaged or withdrawn with a key
       [syn: bolt, deadbolt]
    4: the act of moving with great haste; "he made a dash for the
       door" [syn: dash, bolt]
    5: a roll of cloth or wallpaper of a definite length
    6: a screw that screws into a nut to form a fastener
    7: a sudden abandonment (as from a political party)
    v 1: move or jump suddenly; "She bolted from her seat"
    2: secure or lock with a bolt; "bolt the door" [ant: unbolt]
    3: swallow hastily
    4: run away; usually includes taking something or somebody
       along; "The thief made off with our silver"; "the accountant
       absconded with the cash from the safe" [syn: abscond,
       bolt, absquatulate, decamp, run off, go off, make
       off]
    5: leave suddenly and as if in a hurry; "The listeners bolted
       when he discussed his strange ideas"; "When she started to
       tell silly stories, I ran out" [syn: run off, run out,
       bolt, bolt out, beetle off]
    6: eat hastily without proper chewing; "Don't bolt your food!"
       [syn: gobble, bolt]
    7: make or roll into bolts; "bolt fabric"