Definitions of Gentile:

noun: in this sense `Gentile' denotes a Christian as contrasted with a Jew; `goy' is a derogatory word for Christians used by Jews
noun: a person who is not a member of one's own religion; used in this sense by Mormons and Hindus
noun: a person who does not acknowledge your God
adjective: belonging to or characteristic of non-Jewish peoples
name: A surname (common: 1 in 25000 families; popularity rank in the U.S.: #2902)