osar
/ˈəʊsɑː/Geology
noun
A long narrow ridge or mound of sand or gravel deposited by a stream flowing beneath a glacier; = esker. Usually in plural Compare kame.
Origin
Mid 19th century; earliest use found in Geologist. From French osar and its etymon Swedish åsar, plural of ås ridge of a hill (Old Swedish aas, cognate with Old Icelandic áss (Icelandic ás), Norwegian ås, Danish ås, of uncertain origin; probably further cognate with Gothic ams shoulder from the same Indo-European base as classical Latin umerus shoulder).