Au·gus·tin·i·an, a. Of or pertaining to St. Augustine, bishop of Hippo in Northern Africa (b. 354 -- d. 430), or to his doctrines.
 Augustinian canons, an order of monks once popular in England and Ireland; -- called also regular canons of St. Austin, and black canons.
 Augustinian hermits or Austin friars, an order of friars established in 1265 by Pope Alexander IV. It was introduced into the United States from Ireland in 1790.
 Augustinian nuns, an order of nuns following the rule of St. Augustine.
 Augustinian rule, a rule for religious communities based upon the 109th letter of St. Augustine, and adopted by the Augustinian orders.


 Augustinian Hermits
      n : a monastic order of friars established in 1256 by the Pope