A large mass of snow, ice, and rocks falling rapidly down a mountainside.

A sudden occurrence of a large amount of something, typically overwhelming or destructive.

अचानक होने वाली बड़ी मात्रा

English Usage: There was an avalanche of complaints after the product was recalled.

Hindi Usage: उत्पाद वापस लिए जाने के बाद शिकायतों की एक बड़ी मात्रा आई।