Crevice

n.	1.	A narrow opening resulting from a split or crack or the separation of a junction; a cleft; a fissure; a rent. The mouse, Behind the moldering wainscot, shrieked, Or from the crevice peered about. - Tennyson.
v. t.	1.	To crack; to flaw.

Noun	1.	crevice - a long narrow depression in a surface Synonyms: cranny, fissure, chap, crack
	2.	crevice - a long narrow opening Synonyms: crack, scissure, cleft, fissure

abysm, abyss, arroyo, box canyon, breach, break, canyon, cavity, chap, chasm, check, chimney, chink, cleft, cleuch, clough, col, coulee, couloir, crack, cranny, crevasse, 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, scissure, seam, slit, slot, split, trench, valley, void, wadi