panopticon
/pænˈɒptɪkɒn/noun
- historical a circular prison with cells arranged around a central well, from which prisoners could at all times be observed〈史〉（看守室在中央的）全景监狱; 环形监狱。
词源
mid 18th cent.: from PAN- 'all' + Greek optikon, neuter of optikos 'optic'.