包围 (bāo wéi) is a verb meaning 'to surround' or 'to encircle' — literally, 'to wrap around and close in'. The first character 包 (bāo) means 'to wrap', 'to contain', or 'to envelop', while 围 (wéi) means 'to surround' or 'to enclose'. Together, they form a compound verb emphasizing complete, often strategic or physical, enclosure from all sides. It’s commonly used in military, tactical, ecological, and everyday descriptive contexts — for example, describing animals cornering prey, soldiers surrounding an enemy position, or even crowds gathering tightly around a performer.

The word implies intentionality and spatial completeness: the subject fully isolates the object by occupying positions on all sides. It’s not just proximity but coordinated positioning. While it can appear in neutral or descriptive writing, it often carries connotations of pressure, control, or urgency — especially when describing conflict, pursuit, or natural behavior like predators hemming in their target.