Definition of roche moutonnée in US English:

roche moutonnée

nounPlural roches moutonnées

  • A small bare outcrop of rock shaped by glacial erosion, with one side smooth and gently sloping and the other steep, rough, and irregular.

    • ‘This ice flow is also associated with striae and roches moutonnées in the valley north of Cadair Idris.’


Mid 19th century: French, literally ‘fleecy rock’.


roche moutonnée

/ˈrōSH ˌmo͞otnˈā/