1. A slide of large masses of snow and ice and mud down a mountain
   "The ski resort was closed due to the risk of avalanches";
   - snowslide [N. Amer]
    
2. A sudden appearance of an overwhelming number of things
   "the program brought an avalanche of mail"

1. Gather into a huge mass and roll down a mountain, of snow
   "The snow avalanched down the slope"

Derived forms: avalanched, avalanches, avalanching

Type of: come down, descend, go down, happening, natural event, occurrence, occurrent, slide

Encyclopedia: Avalanche, Wisconsin