moraine (n.)youdaoicibaDictYouDict[moraine 词源字典]
"ridge of rock deposited by a glacier," 1789, from French moraine (18c.), from Savoy dialect morena "mound of earth," from Provençal morre "snout, muzzle," from Vulgar Latin *murrum "round object," of unknown origin, perhaps from a pre-Latin Alpine language. Related: Morainal; morainic.[moraine etymology, moraine origin, 英语词源]