Definition - What does Guru Nanak mean?
Guru Nanak (April 15, 1469 – September 22, 1539) was the founder of Sikhism. Born a Hindu, accounts of his life tell of his spiritual interest and heightened awareness that was available to him at an early age.
When Guru Nanak was around thirty years old, he had a vision about following God that set him on his path to found Sikhism. Throughout his life, he traveled widely in order to share his teachings as the first Sikh guru, sharing the message of peace, kindness and love in place of vengeance and malice. After the conclusion of his traveling teachings, he retired as a peasant farmer in a village in Punjab.
Yogapedia explains Guru Nanak
Guru Nanak, upon his enlightenment, believed that “there is no Hindu, nor Mussalman [Muslim],” and his teachings centered on the fatherhood of God and the brotherhood of all mankind, and loving others as such. Guru Nanak taught against the caste system as well as idol worship.
Guru Nanak is not known for being connected with the practice of yoga or meditation. Traditionally, yoga has not been an accepted practice in Sikhism, and there is a strongly-held belief among some mainstream Sikhs that yoga is incompatible with their religion. However, there are those who cite "Gurbani" (Sikhism's holy texts) to support yoga as an accepted practice, specifically yoga's goal of union with the Divine.