‘落网’ literally means ‘to fall into a net’ — combining 落 (luò, ‘to fall, to descend’) and 网 (wǎng, ‘net’). Figuratively, it refers to criminals or suspects being captured by law enforcement, much like prey caught in a net. The phrase carries a strong connotation of inevitability and finality: once someone ‘falls into the net,’ escape is over.

This expression is commonly used in news reports, police announcements, and crime-related narratives. It is formal and slightly literary — rarely used in casual speech among friends, but frequent in written Chinese and broadcast media. While the imagery originates from hunting (hence its inclusion under ‘Animals’), modern usage is almost exclusively metaphorical and human-centered, emphasizing justice served or criminal accountability.