WordNet (r) 3.0 (2006):

Aquinas
    n 1: (Roman Catholic Church) Italian theologian and Doctor of
         the Church who is remembered for his attempt to reconcile
         faith and reason in a comprehensive theology; presented
         philosophical proofs of the existence of God (1225-1274)
         [syn: Aquinas, Thomas Aquinas, Saint Thomas, St.
         Thomas, Saint Thomas Aquinas, St. Thomas Aquinas]