n. 裂缝, (堤、坝等的)决口, 崩溃处

vt. 使有裂缝

[ noun ]
a deep fissure
<noun.object>

Crevasse \Cre`vasse"\ (kr?`v?s"), n. [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.]