Etymology 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.
1
A political, cultural or social entity or part thereof that is completely surrounded by another.
The Republic of San Marino is an enclave of Italy.
The streets around Union Square form a Protestant enclave within an otherwise Catholic neighbourhood.
2
A group that is set off from a larger population by its characteristic or behavior.
They were learning to do what in all my years in the music business I never saw — which was women running a record company, women producing concerts, women learning to be engineers, women moving into this absolutely all-male enclave. You never saw a woman in any of those positions, in any of that work except as secretaries and "go-fers".1989 December 3, Pam Mitchell, Ronnie Gilbert, “Carrying On The Honorable Tradition Of 'Protest Music'”, in Gay Community News, volume 17, number 21, page 9:
What is unbearable, in fact, is the feeling, 13 years after 9/11, that America has been chasing its tail; that, in some whack-a-mole horror show, the quashing of a jihadi enclave here only spurs the sprouting of another there; that the ideology of Al Qaeda is still reverberating through a blocked Arab world whose Sunni-Shia balance (insofar as that went) was upended by the American invasion of Iraq.2014 November 17, Roger Cohen, “The horror! The horror! The trauma of ISIS [print version: International New York Times, 18 November 2014, p. 9]”, in The New York Times:
1 more example
Since 2013, he has become a guru for the US-based far-right movement neoreaction, or NRx as it often calls itself. Neoreactionaries believe in the replacement of modern nation-states, democracy and government bureaucracies by authoritarian city states, which on neoreaction blogs sound as much like idealised medieval kingdoms as they do modern enclaves such as Singapore.2017 May 11, Andy Beckett, “Accelerationism: how a fringe philosophy predicted the future we live in”, in The Guardian:
3
Computing, Engineering, Mathematics, Natural sciences, Physical sciences, Sciences An isolated portion of an application's address space, such that data in an enclave can only be accessed by code in the same enclave.
When an enclave spans a system boundary in a sysplex, it is called a multisystem enclave.2010, Mike Ebbers, Dino Tonelli, Jason Arnold, Co-locating Transactional and Data Warehouse Workloads on System z, page 245:
Etymology 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.