[1] : The Collaborative International Dictionary of English v.0.48

crack \crack\, v. i.
   1. to burst or open in chinks; to break, with or without
      quite separating into parts.
      1913 webster

            by misfortune it cracked in the coling. --boyle.
      1913 webster

            the mirror cracked from side to side. --tennyson.
      1913 webster

   2. to be ruined or impaired; to fail. collog.
      1913 webster

            the credit . . . of exchequers cracks, when little
            comes in and much goes out.           --dryden.
      1913 webster

   3. to utter a loud or sharp, sudden sound.
      1913 webster

            as thunder when the clouds in autumn crack. --shak.
      1913 webster

   4. to utter vain, pompous words; to brag; to boast; -- with
      of. archaic.
      1913 webster

            ethoipes of their sweet complexion crack. --shak.
      1913 webster

[2] : The Collaborative International Dictionary of English v.0.48

crack \crack\ kra^k, v. t. imp.  p. p. cracked
   kra^kt; p. pr.  vb. n. cracking. oe. cracken,
   craken, to crack, break, boast, as. cracian, cearcian, to
   crack; akin to d. kraken, g. krachen; cf. skr. garj to
   rattle, or perh. of imitative origin. cf. crake,
   cracknel, creak.
   1913 webster
   1. to break or burst, with or without entire separation of
      the parts; as, to crack glass; to crack nuts.
      1913 webster

   2. to rend with grief or pain; to affect deeply with sorrow;
      hence, to disorder; to distract; to craze.
      1913 webster

            o, madam, my old heart is cracked.    --shak.
      1913 webster

            he thought none poets till their brains were
            cracked.                              --roscommon.
      1913 webster

   3. to cause to sound suddenly and sharply; to snap; as, to
      crack a whip.
      1913 webster

   4. to utter smartly and sententiously; as, to crack a joke.
      --b. jonson.
      1913 webster

   5. to cry up; to extol; -- followed by up. low
      1913 webster

   to crack a bottle, to open the bottle and drink its
      contents.

   to crack a crib, to commit burglary. slang

   to crack on, to put on; as, to crack on more sail, or more
      steam. colloq.
      1913 webster
see also:
cracked cracking crake cracknel creak to crack a bottle 
to crack a crib to crack on 

[3] : The Collaborative International Dictionary of English v.0.48

crack \crack\, n.
   1. a partial separation of parts, with or without a
      perceptible opening; a chink or fissure; a narrow breach;
      a crevice; as, a crack in timber, or in a wall, or in
      glass.
      1913 webster

   2. rupture; flaw; breach, in a moral sense.
      1913 webster

            my love to thee is sound, sans crack or flaw.
                                                  --shak.
      1913 webster

   3. a sharp, sudden sound or report; the sound of anything
      suddenly burst or broken; as, the crack of a falling
      house; the crack of thunder; the crack of a whip.
      1913 webster

            will the stretch out to the crack of doom? --shak.
      1913 webster

   4. the tone of voice when changed at puberty.
      1913 webster

            though now our voices
            have got the mannish crack.           --shak.
      1913 webster

   5. mental flaw; a touch of craziness; partial insanity; as,
      he has a crack.
      1913 webster

   6. a crazy or crack-brained person. obs.
      1913 webster

            i . . . can not get the parliament to listen to me,
            who look upon me as a crack and a projector.
                                                  --addison.
      1913 webster

   7. a boast; boasting. obs. "crack and brags." --burton.
      "vainglorius cracks." --spenser.
      1913 webster

   8. breach of chastity. obs. --shak.
      1913 webster

   9. a boy, generally a pert, lively boy. obs.
      1913 webster

            val. 't is a noble child. vir. a crack, madam.
                                                  --shak.
      1913 webster

   10. a brief time; an instant; as, to be with one in a crack.
       eng.  scot. colloq.
       1913 webster

   11. free conversation; friendly chat. scot.
       1913 webster

             what is crack in english? . . . a crack is . . . a
             chat with a good, kindly human heart in it. --p. p.
                                                  alexander.
       1913 webster

   12. a witty remark; a wisecrack.
       pjc

   13. a chance or opportunity to do something; an attempt; as,
       i'll take a crack at it.
       pjc

   14. a form of cocaine, highly purified and prepared as small
       pellets, especially suitable for smoking; -- also called
       rock. used in this form it appears to be more addicting
       than cocaine powder. slang
       pjc
see also:
rock 

[4] : The Collaborative International Dictionary of English v.0.48

crack \crack\, a.
   of superior excellence; having qualities to be boasted of;
   as, a crack shot. colloq.
   1913 webster

         one of our crack speakers in the commons. --dickens.
   1913 webster

[5] : The Collaborative International Dictionary of English v.0.48

cocaine \co"caine\, n. chem.
   a powerful narcotic alkaloid, c17h21no4, obtained from the
   leaves of coca. it is a bitter, white, crystalline substance,
   and is remarkable for producing local insensibility to pain.
   it is classified as addictive and is not available in the u.
   s. without a prescription, but is nevertheless one of the
   most widespread illegal drugs of abuse. it is used in several
   forms, including small pellets of free base, called crack.
   most of the cacaine illegally used in the u.s. is imported.
   1913 webster +pjc
see also:
c17h21no4 crack 

[6] : WordNet (r) 2.0

crack
     adj : of the highest quality; "an ace reporter"; "a crack shot";
           "a first-rate golfer"; "a super party"; "played
           top-notch tennis"; "an athlete in tiptop condition";
           "she is absolutely tops" syn: ace, a-one, first-rate,
            super, tiptop, topnotch, topsp
     n 1: a long narrow opening syn: cleft, crevice, fissure, scissure
     2: a narrow opening; "he opened the window a crack" syn: gap
     3: a long narrow depression in a surface syn: crevice, cranny,
         fissure, chap
     4: a sudden sharp noise; "the crack of a whip"; "he heard the
        cracking of the ice"; "he can hear the snap of a twig"
        syn: cracking, snap
     5: a chance to do something; "he wanted a shot at the champion"
        syn: shot
     6: witty remark syn: wisecrack, sally, quip
     7: a blemish resulting from a break without complete separation
        of the parts; "there was a crack in the mirror"
     8: a purified and potent form of cocaine that is smoked rather
        than snorted syn: tornado
     9: a usually brief attempt; "he took a crack at it"; "i gave it
        a whirl" syn: fling, go, pass, whirl, offer
     10: the act of cracking something syn: fracture, cracking
     v 1: become fractured; break or crack on the surface only; "the
          glass cracked when it was heated" syn: check, break
     2: make a very sharp explosive sound; "his gun cracked"
     3: make a sharp sound; "his fingers snapped" syn: snap
     4: hit forcefully; deal a hard blow, making a cracking noise;
        "the teacher cracked him across the face with a ruler"
     5: pass through a barrier; "registrations cracked through the
        30,000 mark in the county" syn: break through
     6: break partially but keep its integrity; "the glass cracked"
     7: break suddenly and abruptly, as under tension; "the rope
        snapped" syn: snap
     8: suffer a nervous breakdown syn: crack up, crock up, break
        up, collapse
     9: tell spontaneously; "crack a joke"
     10: cause to become cracked; "heat and light cracked the back of
         the leather chair"
     11: reduce petroleum to a simpler compound by cracking
     12: break into simpler molecules by means of heat; "the
         petroleum cracked"
see also:
ace a-one first-rate super tiptop topnotch 
topsp cleft crevice fissure scissure 
gap cranny chap cracking snap 
shot wisecrack sally quip tornado 
fling go pass whirl offer 
fracture check break break through crack up 
crock up break up collapse 

[7] : Moby Thesaurus II by Grady Ward, 1.0

758 moby thesaurus words for "crack":
   daedalian, parthian shot, above par, abrade, abrasion, abysm,
   abyss, account for, ace, address, adept, adroit, allegation,
   allegorize, alligator, answer, aperture, aphorism, apostrophe,
   apothegm, approach, apt, arroyo, artistic, assay, assertion,
   attempt, authoritative, averment, back answer, band, bang, bar,
   bark, bash, bastinado, bat, beating, belt, bezel, bid, biff,
   birthmark, bit, blackhead, blast, blaze, bleb, blemish, blister,
   bloody, blow, bon mot, bonk, boom, bottom, boutade, bowshot,
   box canyon, brand, bravura, breach, break, break open, break up,
   breakage, breath, breathing, brief span, bright idea,
   bright thought, brilliant, brilliant idea, broach, broaching, bug,
   bulla, bump, burn, burn in, burn off, burst, bust, canal, canalize,
   canyon, carve, cast, catch, caustic remark, cauterize, cavity,
   chafe, chamfer, channel, chap, char, chase, chasm, check, chimney,
   chink, chip, chisel, chop, cicatrix, cicatrize, clack, clap,
   clarify, clash, claw, clean, clear up, clearing, cleave, cleft,
   cleuch, clever, click, clip, clobber, close quarters, close range,
   clough, clout, clump, coal, col, coldcock, come apart,
   come unstuck, comeback, comedo, comment, conceit, concussion,
   coordinated, corrugate, corrugation, coulee, couloir, coup, crack,
   crack up, crackerjack, cracking, crackle, crackling, cranny, crash,
   crater, craze, crepitate, crepitation, crevasse, crevice, crimp,
   crump, cryptanalyze, cunning, cupel, cut, cut apart, cut open,
   cute, cutting remark, cwm, dado, daedal, dash, deal, deal a blow,
   debug, decipher, deck, declaration, decode, decrepitate,
   decrepitation, decrypt, deface, defacement, defect, defection,
   deficiency, defile, deform, deformation, deformity, deft, dell,
   demonstrate, demythologize, detonate, detonation, dexterous,
   dextrous, dictum, dig, dike, dint, diplomatic, discharge,
   disclosure, discontinuity, disentangle, disfiguration, disfigure,
   disfigurement, disintegrate, dispart, distort, distortion, ditch,
   divaricate, divide, divine, do, donga, dope, dope out, draw,
   drawback, drollery, drub, drubbing, drumming, dump, earreach,
   earshot, effort, elucidate, endeavor, engrave, engraving,
   enlighten, epigram, essay, euhemerize, excavation, excellent,
   exclamation, exemplify, exfoliate, experiment, expert, explain,
   explain away, explicate, explode, explosion, exposit, expound,
   expression, facetiae, failing, failure, fall to pieces, fancy,
   fathom, fault, faute, fenestra, fetch, fetch a blow, figure out,
   find out, find the answer, fissure, fistula, flame, flap, flash,
   flash burn, flash of wit, flaw, fleer, flight of wit, fling, flip,
   flop, flout, flume, flute, fluting, fly open, foible, fontanel,
   foolery, foramen, found, fracture, frailty, fray, frazzle, freckle,
   fret, fulminate, fulmination, furrow, fusillade, gag, gall, gambit,
   gap, gape, gash, gat, get, get right, gibe, gibing retort,
   give away, give reason for, give the meaning, give way, go,
   go haywire, go into hysterics, go off, go to pieces, goffer, good,
   goodish, gorge, gouge, graceful, greeting, groove, guess,
   guess right, gulch, gulf, gully, gunshot, hair, hair space,
   hairbreadth, hairsbreadth, half a jiffy, half a mo, half a second,
   half a shake, handy, happy thought, have it, hemangioma, hiatus,
   hickey, high-class, high-grade, high-quality, high-test, hit,
   hit a clip, hit it, hole, hollow, hurt, illuminate, illustrate,
   imperfection, inadequacy, inch, incise, incision, infirmity,
   ingenious, injure, injury, inlet, instant, interjection, interpret,
   interstice, interval, jab, jape, jeer, jest, jiff, jiffy, joint,
   keloid, kink, kloof, knock, knock cold, knock down, knock out,
   lacerate, laceration, lacuna, lay open, laying open, leak,
   leg-pull, lentigo, lesion, let have it, lick, list, little,
   little problem, little ways, lose courage, lose self-control,
   magisterial, maim, make clear, make mincemeat of, make out,
   make plain, mar, master, masterful, masterly, maul, mention,
   microgroove, microsecond, milium, millisecond, minute, moat, mock,
   mole, moment, mortal wound, mot, move, mutilate, mutilation,
   nasty crack, neat, needle scar, nevus, niche, no mean, notch, note,
   nullah, observation, offer, ope, open, open the lock, open up,
   opening, opening up, orifice, outlet, oxidate, oxidize, parch,
   part, parting shot, pass, passage, passageway, paste, pelt,
   percussion, persiflage, phrase, pierce, pimple, pistol shot, pit,
   play of wit, pleasantry, pleat, plow, plumb, plunk, pock, pockmark,
   poke, politic, pop, popularize, pore, port-wine mark,
   port-wine stain, position, potshot, pound, problem, professional,
   proficient, pronouncement, psych, psych out, punch, puncture,
   pustule, put-down, put-on, puzzle out, pyrolyze, question, quick,
   quip, quips and cranks, quite some, rabbet, rap, rationalize,
   ravel, ravel out, ravine, ready, reflection, remark, rend, rent,
   repartee, report, resolve, resourceful, retort, riddle, rifle,
   rifling, rift, rime, rip, riposte, rive, ruck, rude reproach, run,
   rupture, rut, sally, salvo, savage, say, saying, scab, scald,
   scale, scar, scarify, scintillation, scissure, scoff, scorch,
   score, scotch, scrape, scratch, scuff, scurrility, seam, sear,
   sebaceous cyst, sec, second, second-degree burn, sentence,
   separate, shake, shatter, shed light upon, shiver, short answer,
   short distance, short piece, short way, shortcoming, shot, show,
   show how, show the way, simplify, singe, sizzling, skilled,
   skillful, skin, slam, slap, slash, slat, slice, slick, slit, slog,
   slot, slug, smack, smart crack, smart saying, smash, smite, snag,
   snap, snapping, snappy comeback, soak, sock, solder, solve, some,
   something missing, sore, sort out, space, span, spell out, spit,
   spitting, spitting distance, splat, splinter, split, split second,
   splitting, sprain, spread, spread out, spring a leak, spring open,
   stab, stab wound, stagger, start, statement, statesmanlike, step,
   stick, stoma, strain, strawberry mark, streak, streaking, stria,
   striate, striation, striature, striga, strike, strike at, striola,
   stripe, striping, stroke, stroke of wit, strong bid, sty, stylish,
   subjoinder, sulcation, sulcus, superior, swap, swat, swing,
   swing open, swinge, swipe, tactful, taint, tap, tattoo, taunt,
   tear, tear open, tentative, the compleat, the complete,
   third-degree burn, thought, throw light upon, throw open,
   throwing open, thump, thwack, tick, time, torrefy, track, trauma,
   traumatize, trench, trial, trial and error, trice, trough, try,
   turn of thought, twink, twinkle, twinkling, twist, twit, twitch,
   two shakes, uncorking, undertaking, undo, unfold, unlock, unravel,
   unriddle, unscramble, unstopping, untangle, untwist, unweave,
   utterance, valley, verbal thrust, verruca, vesicate, vesicle,
   virtuoso, void, volley, vulcanize, vulnerable place, wadi, wale,
   wallop, warp, wart, weak link, weak point, weakness, weal, weld,
   well-done, well-worn groove, welt, wen, whack, wham, whap, whirl,
   whitehead, whomp, whop, wink, wisecrack, witticism, word, work,
   work out, workmanlike, wound, wounds immedicable, wrench, wrinkle,
   yak, yawn, yerk

[8] : Jargon File (4.3.1, 29 Jun 2001)

crack warez d00dz 1. v. to break into a system compare cracker.
   2. v. action of removing the copy protection from a commercial program.
   people who write cracks consider themselves challenged by the copy
   protection measures. they will often do it as much to show that they are
   smarter than the developer who designed the copy protection scheme than
   to actually copy the program. 3. n. a program, instructions or patch
   used to remove the copy protection of a program or to uncripple features
   from a demo/time limited program. 4. an exploit.


see also:
cracker exploit 

Crack >> C Words
Crack, definition of term: Crack
crack_pag1.html

Crack Up >> C Words
Crack Up, definition of term: Crack Up
crack+up_pag1.html

Crack Down >> C Words
Crack Down, definition of term: Crack Down
crack+down_pag1.html

Crack Shot >> C Words
Crack Shot, definition of term: Crack Shot
crack+shot_pag1.html