Definition of crevasse noun from the Oxford Advanced Learner's Dictionary

 

crevasse

 noun
noun
BrE BrE//krəˈvæs//
 
; NAmE NAmE//krəˈvæs//
 
 
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a deep open crack, especially in ice, for example in a glacier The majority of crevasse deaths happen to those who travel across glaciers unroped. Word Origin early 19th cent.: from French, from Old French crevace, from crever ‘to burst’, from Latin crepare ‘to rattle, crack’.
See the Oxford Advanced American Dictionary entry: crevasse