noun
crowd collapse; crowd avalanche
A disaster phenomenon where a densely packed crowd collapses, often resulting in crushing injuries or fatalities. Used in safety and disaster prevention contexts.
群衆雪崩が発生し、多くの人が負傷した。
A crowd collapse occurred, and many people were injured.
イベント会場では群衆雪崩を防ぐための対策が必要だ。
At event venues, measures to prevent crowd collapses are necessary.
Compound of 群衆 (crowd) and 雪崩 (avalanche), literally 'crowd avalanche'. The term is a modern coinage used in disaster science.