CREVASSE
crevasse
(noun) a deep fissure
Source: WordNet® 3.1
Etymology
Noun
crevasse (plural crevasses)
A crack or fissure in a glacier or snowfield; a chasm.
(US) A breach in a canal or river bank.
(figuratively) A discontinuity or “gap” between the accounted variables and an observed outcome.
Verb
crevasse (third-person singular simple present crevasses, present participle crevassing, simple past and past participle crevassed)
(intransitive) To form crevasses.
(transitive) To fissure with crevasses.
Source: Wiktionary
Cre`vasse" (kr`vs"), n. Etym: [F. See Crevice.]
1. A deep crevice or fissure, as in embankment; one of the clefts or
fissure by which the mass of a glacier is divided.
2. A breach in the levee or embankment of a river, caused by the
pressure of the water, as on the lower Mississippi. [U.S.]
Source: Webster’s Unabridged Dictionary 1913 Edition