avalanche

n. mass of falling snow, mass of falling dirt and rocks; something that falls like an avalanche

This article refers to the natural event. For other uses, see Avalanche (disambiguation) An avalanche is a flow of snow down a mountainside, though rock slides and debris flows are also sometimes called avalanches. Avalanches are one of the biggest dangers in the mountains for both life and property.
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Avalanche Geomedicine A natural disaster in which a massive block of snow cascades down a steep incline Statistics In North America, ± 15 die [more]Avalanche - Community and Resources

Noun
1. a slide of large masses of snow and ice and mud down a mountain
(hypernym) slide
(hyponym) lahar
(derivation) roll down
2. a sudden appearance of an overwhelming number of things; "the program brought an avalanche of mail"
(hypernym) happening, occurrence, natural event
Verb
1. of snow masses in the mountains
(synonym) roll down
(hypernym) descend, fall, go down, come down

n. avalanche; flood, shower