[{"Bold_text": "noun", "List Items": ["a large mass of snow, ice, etc., detached from a mountain slope and sliding or falling suddenly downward.", "anything like an avalanche in suddenness and overwhelming quantity:an avalanche of misfortunes; an avalanche of fan mail.", "Also called Townsend avalanche Townsend avalanche.Physics, Chemistry.a cumulative ionization process in which the ions and electrons of one generation undergo collisions that produce a greater number of ions and electrons in succeeding generations."]}, {"Bold_text": "verb (used without object)", "List Items": ["to come down in, or like, an avalanche."]}, {"Bold_text": "verb (used with object)", "List Items": ["to overwhelm with an extremely large amount of anything; swamp."]}]