society > inhabiting and dwelling > inhabited place > district in relation to human occupation > town as opposed to country > town or city > part of town or city > [noun] > inhabited by similar people > Arab (2)
(a) A North African castle or fortress. (b) The Arab quarter surrounding a castle or fortress in a North African town, esp. that of Algiers.
The old walled part of a North African town. Hence formerly (in colonial times): the non-European section of a North African town (now historical).