The Collaborative International Dictionary of English v.0.48:

bust \bust\ (b[u^]st), n. [F. buste, fr. It. busto; cf. LL.
   busta, bustula, box, of the same origin as E. box a case;
   cf., for the change of meaning, E. chest. See Bushel.]
   1. A piece of sculpture representing the upper part of the
      human figure, including the head, shoulders, and breast.
      [1913 Webster]

            Ambition sighed: she found it vain to trust
            The faithless column, and the crumbling bust.
                                                  --Pope.
      [1913 Webster]

   2. The portion of the human figure included between the head
      and waist, whether in statuary or in the person; the chest
      or thorax; the upper part of the trunk of the body.
      [1913 Webster]

   3. Especially: A woman's bosom[2].
      [PJC]

The Collaborative International Dictionary of English v.0.48:

bust \bust\ (b[u^]st), v. t.
   To arrest, for committing a crime; -- often used in the
   passive; as, the whole gang got busted. [informal]
   [PJC]

The Collaborative International Dictionary of English v.0.48:

bust \bust\ (b[u^]st), v. i.
   1. To break or burst. [informal]
      [PJC]

   2. (Card Playing) In blackjack, to draw a card that causes
      one's total to exceed twenty-one.
      [PJC]

   3. To go bankrupt.
      [PJC]

   to go bust to go bankrupt.

   or bust or collapse from the effort; -- used in phrases
      expressing determination to do something; as, Oregon or
      bust, meaning "We will get to Oregon or die trying."
      [PJC]

WordNet (r) 3.0 (2006):

bust
    adj 1: lacking funds; "`skint' is a British slang term" [syn:
           broke, bust, skint, stone-broke, stony-broke]
    n 1: a complete failure; "the play was a dismal flop" [syn:
         flop, bust, fizzle]
    2: the chest of a woman [syn: female chest, bust]
    3: a sculpture of the head and shoulders of a person
    4: an occasion for excessive eating or drinking; "they went on a
       bust that lasted three days" [syn: bust, tear, binge,
       bout]
    v 1: ruin completely; "He busted my radio!" [syn: break,
         bust] [ant: bushel, doctor, fix, furbish up,
         mend, repair, restore, touch on]
    2: search without warning, make a sudden surprise attack on;
       "The police raided the crack house" [syn: raid, bust]
    3: separate or cause to separate abruptly; "The rope snapped";
       "tear the paper" [syn: tear, rupture, snap, bust]
    4: go to pieces; "The lawn mower finally broke"; "The gears wore
       out"; "The old chair finally fell apart completely" [syn:
       break, wear, wear out, bust, fall apart]
    5: break open or apart suddenly and forcefully; "The dam burst"
       [syn: burst, bust]

Moby Thesaurus II by Grady Ward, 1.0:

398 Moby Thesaurus words for "bust":
   abase, abasement, ado, apprehend, apprehension, arch, arrest,
   arrestation, arrestment, bacchanal, bacchanalia, bacchanalian,
   backfire, bad times, bag, bang, bankrupt, bankruptcy, barrow, bat,
   be ruined, become insolvent, bender, binge, blast, blow out,
   blow up, bomb, boobs, boom, boot, booze, bosom, bottoming out,
   bounce, bouncing check, boundary stone, bout, box, brannigan,
   brass, breach, break, break in, break to harness, breast, breasts,
   brisket, bum, bump, burst, business cycle, business fluctuations,
   bustle, cairn, can, capture, carousal, carouse, carving, cashier,
   casting down, celebration, cenotaph, check, chest, chip, chop,
   clamor, clap, clash, clout, collapse, collar, column, compotation,
   cooling off, crack, crash, crisis, cromlech, crop, cross, crump,
   cup, cyclolith, debase, debasement, debauch, deconsecrate, defrock,
   degradation, degrade, degrading, dement, demerit, demote, demotion,
   deplume, depluming, depose, depression, deprive, detain, dethrone,
   detonate, disbar, discharge, discrown, disemploy, disenthrone,
   disgrade, disgrading, dismiss, displace, displume, displuming,
   doll, dolly, dolmen, domesticate, downgrade, downgrading, downturn,
   drinking bout, drum out, drunk, drunken carousal, dud, dug,
   dull thud, dummy, economic cycle, economic expansion,
   economic growth, economic stagnation, escapade, evil day,
   excommunicate, exfoliate, expanding economy, expansion, expel,
   explode, fail, failure, fantoccini, figure, figurehead, figurine,
   fire, fissure, fizzle, flap, flat failure, fling, flop, floperoo,
   flunk, flunk out, flurry, fold, fold up, footstone, fracture,
   frost, fulminate, furlough, furore, fuss, gentle, gingerbread man,
   give the ax, give the gate, go bankrupt, go into receivership,
   go off, go to pot, go to ruin, go under, go up, grave, gravestone,
   growth, guzzle, hard times, hassle, haymaker, headstone,
   heavy weather, high growth rate, hoarstone, housebreak, hubbub,
   humble, humbling, hurly-burly, impoverish, inscription, insolvency,
   insufficient funds, jag, kick, kick upstairs, kited check, knock,
   knockers, lark, lay figure, lay off, lemon, let go, let off,
   let out, liquidate, loser, low, lower, make a pinch,
   make redundant, mama, mamelon, mamelonation, mammary gland,
   mammilla, mammillation, man of straw, manikin, mannequin,
   marionette, marker, market expansion, mausoleum, megalith, memento,
   memorial, memorial arch, memorial column, memorial statue,
   memorial stone, menhir, model, monolith, monument, mound, nab,
   necrology, nenes, netting, nipple, obelisk, obituary, orgy, oust,
   overdraft, overdrawn account, overthrow, pap, papilla, paste,
   pauper, pauperize, peak, peaking, pension, pension off, pick up,
   pigeon breast, pillar, pinch, plaque, ploy, poke, portrait bust,
   potation, pother, prize, prosperity, pub-crawl, pull in, punch,
   puppet, purge, pyramid, rainy day, randan, randy, rap, read out of,
   receivership, recession, recovery, reduce, reduction, release,
   reliquary, remembrance, remove, remove from office, replace,
   report, retire, revel, ribbon, rostral column, ruin, run in,
   rupture, sack, sad times, scale, scarecrow, sculpture, scuttle,
   seizure, separate forcibly, set off, shaft, shoot, shrine,
   shut down, sink, slam, slap, slat, slowdown, slump, smack, snap,
   snowman, sock, splat, split, spree, statuary, statue, statuette,
   stela, stone, stormy weather, strip, strip of office,
   strip of rank, stripping of rank, stupa, superannuate, surplus,
   suspend, swap, symposium, tablet, tame, tap, tear, teat,
   testimonial, thorax, thwack, tit, tits, titties, titty, to-do,
   tomb, tombstone, toot, tope, total loss, touch off, trophy, tumult,
   turkey, turmoil, turn off, turn out, udder, unchurch, unfrock,
   unsaddle, unseat, unthrone, uproar, upturn, wash out, washout,
   wassail, wax figure, waxwork, whack, wham, whap, whirl, whirlpool,
   whirlwind, whomp, whop, wingding, wood carving