Princeton's WordNet

1. Augustine, Saint Augustine, St. Augustine, Augustine of Hippo(noun)

   (Roman Catholic Church) one of the great Fathers of the early Christian church; after a dramatic conversion to Christianity he became bishop of Hippo Regius in North Africa; St. Augustine emphasized man's need for grace (354-430)

2. St. Augustine, Saint Augustine(noun)

   a resort city in northeastern Florida; the oldest city in the United States