("Guru")1469–1539, Indian religious leader: founder of Sikhism.
British Dictionary definitions for guru nanak
Guru Nanak
/ˈnaːˌnʌk/
noun
1.
1469–1539, Indian religious leader and founder of Sikhism. Born near Lahore in India, he spent many years as a missionary before returning to the Punjab, where he gained many followers See also Ten Gurus