I was under the impression that "gentile" was a blanket term for all non-Jews. I was having a conversation with my great aunt, and referred to a Muslim as a gentile, and she claimed that "gentile" only refers to Christians.
What's the truth about this? Are Christians as well as Muslims, Hindus, etc. gentiles, or only Christians?
Is her view the truth, or simply a result of conversations with Jewish friends in which the word "gentile" comes up only being in reference to Christians? She is over 90 years old and is a lapsed Reform believer.