The Collaborative International Dictionary of English v.0.48:

Scrape \Scrape\ (skr[=a]p), v. t. [imp. & p. p. Scraped; p.
   pr. & vb. n. Scraping.] [Icel. skrapa; akin to Sw. skrapa,
   Dan. skrabe, D. schrapen, schrabben, G. schrappen, and prob.
   to E. sharp.]
   1. To rub over the surface of (something) with a sharp or
      rough instrument; to rub over with something that roughens
      by removing portions of the surface; to grate harshly
      over; to abrade; to make even, or bring to a required
      condition or form, by moving the sharp edge of an
      instrument breadthwise over the surface with pressure,
      cutting away excesses and superfluous parts; to make
      smooth or clean; as, to scrape a bone with a knife; to
      scrape a metal plate to an even surface.
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   2. To remove by rubbing or scraping (in the sense above).
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            I will also scrape her dust from her, and make her
            like the top of a rock.               --Ezek. xxvi.
                                                  4.
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   3. To collect by, or as by, a process of scraping; to gather
      in small portions by laborious effort; hence, to acquire
      avariciously and save penuriously; -- often followed by
      together or up; as, to scrape money together.
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            The prelatical party complained that, to swell a
            number the nonconformists did not choose, but
            scrape, subscribers.                  --Fuller.
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   4. To express disapprobation of, as a play, or to silence, as
      a speaker, by drawing the feet back and forth upon the
      floor; -- usually with down. --Macaulay.
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   To scrape acquaintance, to seek acquaintance otherwise than
      by an introduction. --Farquhar.
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            He tried to scrape acquaintance with her, but failed
            ignominiously.                        --G. W. Cable.
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The Collaborative International Dictionary of English v.0.48:

Scrape \Scrape\, n.
   1. The act of scraping; also, the effect of scraping, as a
      scratch, or a harsh sound; as, a noisy scrape on the
      floor; a scrape of a pen.
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   2. A drawing back of the right foot when bowing; also, a bow
      made with that accompaniment. --H. Spencer.
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   3. A disagreeable and embarrassing predicament out of which
      one can not get without undergoing, as it were, a painful
      rubbing or scraping; a perplexity; a difficulty.
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            The too eager pursuit of this his old enemy through
            thick and thin has led him into many of these
            scrapes.                              --Bp.
                                                  Warburton.
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The Collaborative International Dictionary of English v.0.48:

Scrape \Scrape\, v. i.
   1. To rub over the surface of anything with something which
      roughens or removes it, or which smooths or cleans it; to
      rub harshly and noisily along.
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   2. To occupy one's self with getting laboriously; as, he
      scraped and saved until he became rich. "[Spend] their
      scraping fathers' gold." --Shak.
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   3. To play awkwardly and inharmoniously on a violin or like
      instrument.
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   4. To draw back the right foot along the ground or floor when
      making a bow.
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WordNet (r) 3.0 (2006):

scrape
    n 1: a harsh noise made by scraping; "the scrape of violin bows
         distracted her" [syn: scrape, scraping, scratch,
         scratching]
    2: an abraded area where the skin is torn or worn off [syn:
       abrasion, scratch, scrape, excoriation]
    3: a deep bow with the foot drawn backwards (indicating
       excessive humility); "all that bowing and scraping did not
       impress him" [syn: scrape, scraping]
    4: an indication of damage [syn: scratch, scrape, scar,
       mark]
    v 1: scratch repeatedly; "The cat scraped at the armchair" [syn:
         scrape, grate]
    2: make by scraping; "They scraped a letter into the stone"
    3: cut the surface of; wear away the surface of [syn: scratch,
       scrape, scratch up]
    4: bend the knees and bow in a servile manner [syn: scrape,
       kowtow, genuflect]
    5: gather (money or other resources) together over time; "She
       had scraped together enough money for college"; "they
       scratched a meager living" [syn: scrape, scrape up,
       scratch, come up]
    6: bruise, cut, or injure the skin or the surface of; "The boy
       skinned his knee when he fell" [syn: skin, scrape]

Moby Thesaurus II by Grady Ward, 1.0:

369 Moby Thesaurus words for "scrape":
   ablate, ablation, abrade, abrase, abrasion, abrasive, accumulate,
   aggregate, amass, assemble, attrition, autolithograph, baffle,
   bafflement, bark, be a printmaker, belch, bend, bend the knee,
   bend the neck, bending the knee, bewilderment, bind, blare, blat,
   blemish, bloody, bob, bob a curtsy, bob down, bore, bother, bow,
   bow and scrape, bow down, bow the head, bowing and scraping, box,
   bray, break, bruise, brush, brush by, buffing, burn, burnishing,
   burr, burrow, buzz, cackle, caress, carve, caw, chafe, chafing,
   character, check, chip, chirr, chisel, clang, clangor, clank,
   clash, claw, clutch, come in contact, compile, complication,
   concussion, confoundment, confusion, contact, cope, corner, crack,
   crackle, craunch, craze, crease, cribble, croak, crosshatch, crump,
   crunch, curtsy, cut, damage, delve, detrition, difficulty, dig,
   dig out, dike, dilemma, dipping the colors, discomfiture,
   discomposure, disconcert, disconcertedness, disconcertion,
   disconcertment, disturbance, dredge, dredge up, dressing, drill,
   drive, economize, embarrassing position, embarrassment, enchase,
   enforce economies, engrave, enigma, erase, erasure, erode, erosion,
   excavate, fall down before, fiddle, file, filing,
   fine how-do-you-do, fix, flash burn, fracture, fray, frazzle, fret,
   fretting, furrow, gall, galling, garner, gash, gather, genuflect,
   genuflection, get along, get by, get hold of, glance, glean, gnaw,
   gnaw away, gouge, gouge out, grate, grave, graze, grazing, grind,
   grinding, groan, groove, grovel, growl, grub, grumble, hatch,
   hell to pay, hit, hobble, hole, homage, hot water, how-do-you-do,
   hurt, husband, imbroglio, impinge, incise, incision, inclination,
   injure, injury, inscribe, jam, jangle, jar, keep within compass,
   kiss, kneel, kneeling, kowtow, lacerate, laceration, lesion,
   limation, line, lithograph, lower, lower oneself, maim, make a leg,
   make ends meet, make mincemeat of, make obeisance, make prints,
   making a leg, manage, mark, marshal, maul, mess, mine, mix, morass,
   mortal wound, muddle, muster, mutilate, mutilation, mystery, nod,
   nonplus, nudge, obeisance, obsequiousness, osculate,
   parlous straits, pass, perplexity, perturbation, pickle, pierce,
   pile up, pinch, play violin, plight, polishing, position, pother,
   predicament, presenting arms, pretty pass, pretty pickle,
   pretty predicament, print, problem, prostration, puncture,
   put something aside, puzzle, puzzlement, quagmire, quandary,
   quarry, quicksand, rasp, rasping, raze, remove, rend, rent,
   reverence, riddle, rip, rub, rub away, rub off, rub out,
   rubbing away, run, rupture, salaam, salutation, salute,
   sandblasting, sanding, sap, savage, save, save up, saw, scald,
   scoop, scoop out, scorch, score, scotch, scour, scouring, scrabble,
   scranch, scrape along, scrape and save, scraping, scratch,
   scratching, screw, scrimp, scrub, scrubbing, scrunch, scuff,
   sculpture, second-degree burn, servility, shave, shining, shovel,
   sideswipe, sink, situation, skim, skimp, skin, skirt, slash, slit,
   slough, smoothing, snarl, snore, sore, spade, spare, spot, sprain,
   squeak by, squeeze, stab, stab wound, stack up,
   standing at attention, stew, stick, sticky wicket, stint, stipple,
   strain, strait, straits, struggle, submission, submissiveness,
   survive, swamp, sweep, tear, third-degree burn, tight spot,
   tight squeeze, tightrope, toady, tool, touch, touch lightly,
   touch upon, trauma, traumatize, trench, tricky spot, trouble,
   trough, tunnel, twang, unassuredness, unholy mess, upset, wear,
   wear away, wearing away, wound, wounds immedicable, wrench