The Collaborative International Dictionary of English v.0.48:

Matthew \Matthew\ prop. n.
   Saint Matthew, a disciple of Jesus; author of the first
   Gospel.

   Syn: Saint Matthew, St. Matthew, Saint Matthew the Apostle,
        Levi.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Matthew
    n 1: (New Testament) disciple of Jesus; traditionally considered
         to be the author of the first Gospel [syn: Matthew,
         Saint Matthew, St. Matthew, Saint Matthew the
         Apostle, St. Matthew the Apostle, Levi]
    2: one of the Gospels in the New Testament; includes the Sermon
       on the Mount [syn: Matthew, Gospel According to Matthew]