giaour (n.)youdaoicibaDictYouDict[giaour 词源字典]
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].[giaour etymology, giaour origin, 英语词源]