giaour

英 ['dʒaʊə]

giaour (n.): 1560s, Turkish term of contempt for non-Muslims, from Turkish pronunciation of Persian gaur, variant of gabr "infidel, fire-worshipper," originally applied to the adherents of the Zoroastrian religion. Used by the Turks especially of Christians, "and so commonly that it does not necessarily imply an insult" [Century Dictionary].