avalanche - definition and synonyms

noun [countable] 

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  1. 1
    a large amount of snow and ice that suddenly falls down a mountain
    1. a.
      a large amount of a substance that falls somewhere

      an avalanche of rock/stones/mud

  2. 2
    a large quantity of similar things that happen within a short time
    avalanche of:

    The companies are fighting an avalanche of lawsuits nationwide.