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From The Collaborative International Dictionary of English v.0.48:
Moraine \Mo*raine"\, n. [F. Cf. Prov. G. mur stones broken off, It. mora a heap of stones, hillock, G. m["u]rbe soft, broken up, OHG. muruwi, AS. mearu tender, Gr. ? to cause to wither, Skr. ml[=a] to relax.] (Geol.) An accumulation of earth and stones carried forward and deposited by a glacier. --Lyell. [1913 Webster] Note: If the moraine is at the extremity of the glacier it is a terminal moraine; if at the side, a lateral moraine; if parallel to the side on the central portion of the glacier, a medial moraine. See Illust. of Glacier. In the last case it is formed by the union of the lateral moraines of the branches of the glacier. A ground moraine is one beneath the mass of ice. [1913 Webster]