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(; 277), n.[F. avalanche, fr. avaler to descend, to let down, from aval down, downward; (L. ad) + val, L. vallis, valley. See Valley.] 1. A large mass or body of snow and ice sliding swiftly down a mountain side, or falling down a precipice. 2. A fall of earth, rocks, etc., similar to that of an avalanche of snow or ice. 3. A sudden, great, or irresistible descent or influx of anything. スポンサード リンク
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