Yoga comes from a root meaning to yoke or join. It names the many disciplines by which the Indian traditions train attention, body and breath toward liberation, and in particular the classical school systematized in Patañjali’s Yoga Sūtras, which defines yoga as the stilling of the movements of the mind. The Bhagavad Gītā speaks of yogas of action, knowledge and devotion.
Yoga
Union or discipline: the Indian methods of training body and mind for liberation, and the school of Patañjali.