rimaye
/riːˈmʌɪ/ /riːˈmeɪ/Chiefly Mountaineering
noun
A crevasse or series of crevasses found near the head of a mountain glacier.
Origin
Mid 19th century; earliest use found in Mountain Adventures. From French rimaye (1844 or earlier; originally French regional (Savoie); compare French regional (Swiss) rimee) from classical Latin rīma fissure + French -aye, suffix forming collective nouns.