From The Collaborative International Dictionary of English v.0.44 [gcide]:
Gash \Gash\ (g[a^]sh), verb (used with an object) [imp. & p. p. {Gashed} (g[a^]sht); p. pr. & vb. n. {Gashing}.] [For older garth or garse, OF. garser to scarify, F. gercer to chap, perh. from an assumed LL. carptiare, fr. L. carpere, carptum, to pluck, separate into parts; cf. LL. carptare to wound. Cf. {Carpet}.] To make a gash, or long, deep incision in; -- applied chiefly to incisions in flesh.
Grievously gashed or gored to death. --Hayward.
From The Collaborative International Dictionary of English v.0.44 [gcide]:
Gash \Gash\, noun A deep and long cut; an incision of considerable length and depth, particularly in flesh.
From WordNet (r) 2.0 [wn]:
noun
1: a wound made by cutting; "he put a bandage over the cut" [syn: {cut}, {slash}, {slice}]
2: a trench resembling a furrow that was made by erosion or excavation [syn: {cut}]
3: a strong sweeping cut made with a sharp instrument [syn: {slash}]
verb
1: cut open; "she slashed her wrists" [syn: {slash}]
From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:
331 Moby Thesaurus words for "gash": Vandyke, abrade, abrasion, abysm, abyss, amputate, arroyo, ax, bark, bezel, birthmark, bisect, blaze, blaze a trail, blemish, bloody, blotch, bones, box canyon, brand, breach, break, burn, butcher, canal, canalize, canyon, carve, caste mark, cavity, chafe, chaff, chalk, chalk up, chamfer, channel, chap, chase, chasm, check, check off, checkmark, chimney, chink, chip, chisel, chop, cicatrix, cicatrize, claw, cleave, cleft, cleuch, clough, col, concussion, corrugate, corrugation, coulee, couloir, crack, crackle, cranny, craze, crena, crenellate, crenulate, crevasse, crevice, crimp, culm, cut, cut apart, cut away, cut in two, cut off, cwm, dado, dapple, dash, deadwood, defile, define, delimit, dell, demarcate, depression, dichotomize, dike, discolor, discoloration, dishwater, dissever, ditch, donga, dot, draff, draw, dregs, dust, earmark, engrave, engraving, excavation, excise, fault, filings, fissure, flash burn, flaw, fleck, flick, flume, flute, fluting, fracture, fray, frazzle, freckle, fret, furrow, gall, gap, gape, garbage, goffer, gorge, gouge, graving, groove, gulch, gulf, gully, hack, halve, hatch, hew, hogwash, hole, hurt, husks, impress, imprint, incise, incision, indent, indentation, injure, injury, jag, jigsaw, jog, joggle, joint, jot, kerf, kloof, knurl, lacerate, laceration, lance, leak, leavings, lees, lentigo, lesion, line, machicolate, macula, maim, make a mark, make mincemeat of, mark, mark off, mark out, marking, maul, microgroove, mill, moat, mole, mortal wound, mottle, mutilate, mutilation, nevus, nick, nip, nock, notch, nullah, offal, offscourings, open, opening, orts, pare, parings, pass, passage, patch, pencil, pepper, picot, pierce, pink, pleat, plow, point, polka dot, potsherds, prick, print, prune, punch, punctuate, puncture, rabbet, rags, raspings, ravine, refuse, rend, rent, riddle, rifle, rifling, rift, rime, rip, rive, ruck, run, rupture, rut, savage, saw, scald, scallop, scar, scarification, scarify, scissor, scissure, scorch, score, scotch, scourings, scrap iron, scrape, scraps, scratch, scratching, scuff, scum, seal, seam, second-degree burn, serrate, sever, shards, shavings, skin, slack, slag, slash, slice, slit, slop, slops, slot, snip, sore, speck, speckle, splash, split, splotch, spot, sprain, stab, stab wound, stain, stamp, stick, stigma, stigmatize, strain, strawberry mark, streak, stria, striate, striation, stripe, stubble, sulcation, sulcus, sunder, sweepings, swill, tares, tattoo, tattoo mark, tear, third-degree burn, tick, tick off, tittle, tooth, trace, trauma, traumatize, trench, trough, underline, underscore, valley, void, wadi, wastage, waste, waste matter, wastepaper, watermark, weeds, well-worn groove, whittle, wound, wounds immedicable, wrench, wrinkle
From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) [vera]: