User:Margin1522/Claustra

Origins of the term
Claustra is the plural form of the rarely used Latin singular claustrum, with meanings such as enclosed place, bar, barrier, and in late antiquity the walls of a frontier fortification, notably the Claustra Alpium Iuliarum. In the Middle Ages claustra and derived words such as cloister referred to the inner enclosure that isolated monks from serfs and laymen on monastic estates.