enclave
n. countablen. a small area or group that is different from the larger area surrounding it. You often use this to describe a neighborhood where people speak a different language or have a different culture than the rest of the city.
n. a distinct territorial, cultural, or social unit enclosed within a larger, foreign territory. In technical contexts, refers to a protected execution environment that isolates sensitive data from the rest of the system.
The neighborhood is a quiet enclave of artists in the busy city.
The diplomatic enclave is heavily guarded and contains the embassies of several different nations.
The software creates a secure enclave within the processor to ensure that even if the operating system is compromised, the user's private encryption keys remain inaccessible to attackers.
Borrowed from French enclave, from Middle French enclave (“enclave”), deverbal of enclaver (“to inclose”), from Old French enclaver (“to inclose, lock in”), from Vulgar Latin *inclāvāre (“to lock in”), from in + Latin clavis (“key”) or clavus (“nail, bolt”). Compare inlock.
Often followed by the preposition 'of' to describe the contents or character of the area.