Search Result for "chasm": 
Wordnet 3.0

NOUN (1)

1. a deep opening in the earth's surface;

The Collaborative International Dictionary of English v.0.48:

Chasm \Chasm\ (k[a^]z'm), n. [L. chasma, Gr. cha`sma, fr. chai`nein to gape, to open wide. See Chaos.] 1. A deep opening made by disruption, as a breach in the earth or a rock; a yawning abyss; a cleft; a fissure. [1913 Webster] That deep, romantic chasm which slanted down the green hill. --Coleridge. [1913 Webster] 2. A void space; a gap or break, as in ranks of men. [1913 Webster] Memory . . . fills up the chasms of thought. --Addison. [1913 Webster]
WordNet (r) 3.0 (2006):

chasm n 1: a deep opening in the earth's surface
Moby Thesaurus II by Grady Ward, 1.0:

115 Moby Thesaurus words for "chasm": abysm, abyss, aperture, arroyo, blank, box canyon, breach, break, broaching, canyon, cavity, chap, check, chimney, chink, clearing, cleavage, cleft, cleuch, clough, clove, col, coulee, couloir, crack, cranny, crater, crevasse, crevice, cut, cwm, deep, defile, dell, depth, dig, diggings, dike, disclosure, ditch, donga, draw, excavation, fault, fenestra, fissure, fistula, flaw, flume, fontanel, foramen, fracture, furrow, gap, gape, gash, gat, gorge, groove, gulch, gulf, gully, hiatus, hole, hollow, incision, inlet, interval, joint, kloof, lacuna, laying open, leak, mine, moat, notch, nullah, opening, opening up, orifice, outlet, overlook, oversight, pass, passage, passageway, pit, pore, preterition, quarry, ravine, rent, rift, rime, rupture, scissure, seam, shaft, skip, slit, slot, space, split, stoma, throwing open, trench, uncorking, unstopping, valley, void, wadi, well, workings, yawn, yawning abyss
The Free On-line Dictionary of Computing (30 December 2018):

CHeap ASseMbler CHASM (CHASM) A shareware assembler for MS-DOS. (1994-11-15)