Definition of: moraine

(mə·rän′, mō-) noun Geol.
A ridge or heap of earth, stones, etc., carried by a glacier and deposited on adjacent ground, either along the course or at the edges of the glacier, as a medial or lateral moraine, or at its lower terminus, as a terminal moraine. [<dial. F]
—mo·rain′al, mo·rain′ic adjective