brigittine

from The Century Dictionary.

• noun A member of an order of nuns and monks established by St. Brigitta (Bridget), a Swedish princess, about 1344, under the Augustinian rule.
• noun A member of a conventual order of virgins founded by St. Bridget of Ireland in the sixth century, which existed for several centuries in various parts of Europe.
• Pertaining to St. Brigitta or to the order founded by her: as, Brigittine indulgence.