Wordnet 3.0
NOUN (1)
1. 
 (Roman Catholic Church) a title conferred on 33 saints who distinguished themselves through the orthodoxy of their theological teaching; 
- Example: "the Doctors of the Church greatly influenced Christian thought down to the late Middle Ages"[syn: Doctor of the Church, Doctor]
WordNet (r) 3.0 (2006):
Doctor of the Church
    n 1: (Roman Catholic Church) a title conferred on 33 saints who
         distinguished themselves through the orthodoxy of their
         theological teaching; "the Doctors of the Church greatly
         influenced Christian thought down to the late Middle Ages"
         [syn: Doctor of the Church, Doctor]