noun
large-scale roundup; manhunt; crackdown; raid
Refers to a large-scale operation to capture criminals, suspects, or sometimes animals. Often used in news or dramatic contexts for police actions.
警察は昨夜、大捕物を展開した。
The police carried out a large-scale roundup last night.
その事件は大捕物に発展した。
The case escalated into a major manhunt.
Compound of 大 (おお, 'big, large-scale') and 捕物 (とりもの, 'capture, arrest'). The exact historical derivation is uncertain, but the word is formed from common elements.