CHASM

chasm. Chasm, [ch as k] n. a cleft, gap, opening, blank

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Chasm (kăz'm), n. [[L. chasma, Gr. χάσμα, fr. χαίνειν to gape, to open wide. See Chaos.]] 1. 1. A deep opening made by disruption, as a breach in the earth or a rock; a yawning abyss; a cleft; a fissure.
That deep, romantic chasm which slanted down the green hill. Coleridge. 2. 2. A void space; a gap or break, as in ranks of men.
Memory . . . fills up the chasms of thought. Addison.