The Collaborative International Dictionary of English v.0.48:

non-Jew \non-Jew\ prop. n.
   A person who is not Jewish.

   Syn: Gentile, goy.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

non-Jew
    n 1: a Christian as contrasted with a Jew [syn: gentile, non-
         Jew, goy]