Definitions from Wiktionary ( )

▸ noun:  A large mass or body of snow and ice sliding swiftly down a mountain side, or falling down a precipice.
▸ noun:  A fall of earth, rocks, etc., similar to that of an avalanche of snow or ice.
▸ noun:  (by extension) A sudden, great, or irresistible descent or influx; anything like an avalanche in suddenness and overwhelming quantity.
▸ verb:  (intransitive) To descend like an avalanche.
▸ verb:  (transitive) To come down upon; to overwhelm.
▸ verb:  (transitive) To propel downward like an avalanche.

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