围困 is a compound verb meaning 'to besiege' or 'to surround and trap', typically in a military, strategic, or metaphorical context. The first character 围 (wéi) means 'to surround' or 'to encircle', while the second character 困 (kùn) means 'to trap', 'to confine', or 'to exhaust'. Together, they emphasize not just physical encirclement but also the resulting inability to escape or function — implying isolation, pressure, and diminished resources. It often conveys urgency and seriousness, and is commonly used in historical accounts, news reports about conflicts or disasters, and figurative descriptions of being overwhelmed.

This word is not used for casual or light situations — you wouldn’t say someone is 围困 by traffic or homework (use 困扰 or 压力大 instead). It implies an active, intentional, and often hostile containment, usually involving groups (armies, rescue teams, natural forces) acting on a location or group of people. While historically tied to warfare, modern usage extends to natural disasters (e.g., floods cutting off villages) or public health emergencies (e.g., quarantine zones), always preserving the sense of enforced isolation with tangible consequences.