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]