What is a small egg-shaped hill left behind by glaciers?

A Roche moutonne (rock sheep) is a small resistant hill left behind, and conspicuous for its gradual slope on the upstream side and a steep or even plucked slope on the downstream side. Commonly found where a smaller glacier had joined a larger one, and for the last portion of the small glaciers journey, its ice tended to be uplifted by the passage of the larger one.

[So named by the geologists after the name of 'sheep' given to the wig of the gentry as it lay on the bench. The striations on the rock recall the combing of the wig.]