av·a·lanche/`ævḷˏæntʃ; ˈævəlɑːnʃ/ n [C] 1 a large amount of snow that falls down the side of a mountain 雪崩 2 an avalanche of a very large number of things that happen or arrive at the same time 大量〔同时发生的许多事情〕: An avalanche of letters came in from admiring fans. 仰慕者纷纷来信。