scissure

from WordNet (r) 3.0 (2006)

scissure
    n 1: a long narrow opening [syn: {crack}, {cleft}, {crevice},
         {fissure}, {scissure}]

from The Collaborative International Dictionary of English v.0.48

Scissure \Scis"sure\, n. [L. scissura, from scindere, scissum,
   to cut, split.]
   A longitudinal opening in a body, made by cutting; a cleft; a
   fissure. --Hammond.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

70 Moby Thesaurus words for "scissure":
      abysm, abyss, arroyo, box canyon, breach, break, canyon, cavity,
      chap, chasm, check, chimney, chink, cleft, cleuch, clough, col,
      coulee, couloir, crack, cranny, crevasse, crevice, cut, cwm,
      defile, dell, dike, ditch, donga, draw, excavation, fault, fissure,
      flaw, flume, fracture, furrow, gap, gape, gash, gorge, groove,
      gulch, gulf, gully, hole, incision, joint, kloof, leak, moat,
      notch, nullah, opening, pass, passage, ravine, rent, rift, rime,
      rupture, seam, slit, slot, split, trench, valley, void, wadi