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

A sudden occurrence of large amounts of something.

अचानक बड़ी मात्रा में कुछ होना

English Usage: The politician faced an avalanche of criticism after his controversial statement.

Hindi Usage: विवादास्पद बयान के बाद राजनेता को आलोचना का हिमस्खलन का सामना करना पड़ा।