avalanche

Noun
  1. A slide of large masses of snow and ice and mud down a mountain (synset 107419737)
    is a type of: slide - (geology) the descent of a large mass of earth or rocks or snow etc.
    subtypes: lahar - an avalanche of volcanic water and mud down the slopes of a volcano
  2. A sudden appearance of an overwhelming number of things (synset 107299741)
    "the program brought an avalanche of mail"
    is a type of: happening, natural event, occurrence, occurrent - an event that happens
Verb
  1. Gather into a huge mass and roll down a mountain, of snow (synset 201970713)
    is a type of: come down, descend, fall, go down - move downward and lower, but not necessarily all the way
    same as: roll down

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