The Collaborative International Dictionary of English v.0.48:

Scrap \Scrap\ (skr[a^]p), n. [OE. scrappe, fr. Icel. skrap
   trifle, cracking. See Scrape, v. t.]
   1. Something scraped off; hence, a small piece; a bit; a
      fragment; a detached, incomplete portion.
      [1913 Webster]

            I have no materials -- not a scrap.   --De Quincey.
      [1913 Webster]

   2. Specifically, a fragment of something written or printed;
      a brief excerpt; an unconnected extract.
      [1913 Webster]

   3. pl. The crisp substance that remains after drying out
      animal fat; as, pork scraps.
      [1913 Webster]

   4. pl. Same as Scrap iron, below.
      [1913 Webster]
      [1913 Webster]

   Scrap forgings, forgings made from wrought iron scrap.

   Scrap iron.
      (a) Cuttings and waste pieces of wrought iron from which
          bar iron or forgings can be made; -- called also
          wrought-iron scrap.
      (b) Fragments of cast iron or defective castings suitable
          for remelting in the foundry; -- called also foundry
          scrap, or cast scrap.
          [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Shrap \Shrap\, Shrape \Shrape\, n. [Cf. Scrap, and Scrape.]
   A place baited with chaff to entice birds. [Written also
   scrap.] [Obs.] --Bp. Bedell.
   [1913 Webster]

WordNet (r) 3.0 (2006):

scrap
    n 1: a small fragment of something broken off from the whole; "a
         bit of rock caught him in the eye" [syn: bit, chip,
         flake, fleck, scrap]
    2: worthless material that is to be disposed of [syn: rubbish,
       trash, scrap]
    3: a small piece of something that is left over after the rest
       has been used; "she jotted it on a scrap of paper"; "there
       was not a scrap left"
    4: the act of fighting; any contest or struggle; "a fight broke
       out at the hockey game"; "there was fighting in the streets";
       "the unhappy couple got into a terrible scrap" [syn: fight,
       fighting, combat, scrap]
    v 1: dispose of (something useless or old); "trash these old
         chairs"; "junk an old car"; "scrap your old computer" [syn:
         trash, junk, scrap]
    2: have a disagreement over something; "We quarreled over the
       question as to who discovered America"; "These two fellows
       are always scrapping over something" [syn: quarrel,
       dispute, scrap, argufy, altercate]
    3: make into scrap or refuse; "scrap the old airplane and sell
       the parts"

Moby Thesaurus II by Grady Ward, 1.0:

235 Moby Thesaurus words for "scrap":
   abandon, abort, affray, afterglow, afterimage, argue, argument,
   atom, balance, barney, battle, battle royal, bicker, bit, bite,
   bobbery, bones, brawl, broil, bump heads, butt, butt end,
   candle ends, cashier, cast, caterwaul, cease, chaff, chip, chunk,
   clamjamfry, clip, clipping, close, collop, conclude, crumb, culm,
   cut, cutting, dab, deadwood, debris, determine, detritus, disagree,
   disagreement, discard, discards, dishwater, dispense with,
   dispose of, dispute, dollop, dot, draff, dregs, drip, drop,
   droplet, dust, dustup, end, fag end, fall, fight, filings, finish,
   finish up, fleck, flyspeck, forget, forsake, fossil, fracas,
   fragment, fray, garbage, gash, get rid of, give up, gnat, gob,
   gobbet, grain, hassle, hint, hogwash, holdover, hunk, husks, iota,
   jettison, jot, junk, knock-down-and-drag-out, leavings, lees,
   leftovers, litter, lock horns, lumber, lump, make a row, microbe,
   microorganism, midge, minim, minutia, minutiae, mite, modicum,
   moiety, molecule, morceau, morsel, mote, nip, odds and ends, offal,
   offscourings, orts, paring, parings, particle, patch, pension off,
   perorate, piece, pinhead, pinpoint, point, potsherds, quarrel,
   raff, rags, rasher, raspings, refuse, reject, rejects, relics,
   remainder, remains, remnant, residue, residuum, resolve, rest,
   retire, rhubarb, riffraff, roach, row, rubbish, rubble, ruckus,
   ruction, ruins, rump, rumpus, run-in, sawdust, scintilla, scoop,
   scourings, scrap iron, scraps, scratch, scuffle, scum, set-to,
   shadow, shard, shards, shaving, shavings, shed, shindy, shiver,
   shoddy, shred, slack, slag, slice, sliver, slop, slops, slough,
   smitch, smithereen, snack, snatch, snick, snip, snippet, spar,
   spat, speck, splinter, squabble, stitch, stop, straw, stubble,
   stump, suggestion, superannuate, survival, sweepings, swill, tag,
   tares, tatter, terminate, throw away, throw out, tiff, tittle,
   trace, traces, trash, truck, vanishing point, vestige, vestiges,
   wastage, waste, waste matter, wastepaper, weeds, whit, whoop,
   wind up, wrangle



The Free On-line Dictionary of Computing (30 December 2018):

SCRAP

   Something written at CSIR, Pretoria, South Africa in the
   late 1970s.  It ran on Interdata and Perkin-Elmer
   computers and was in use until the late 1980s.

   [But what was it?]

   (1994-12-15)