Definition of "ba"

Any ordinary person who has ever floated out of his body during a nap knows what a Ba is, but unfortunately the dogmas of our materialistic culture constrain the person to ignore and repress his experience.

1981, William Irwin Thompson, The Time Falling Bodies Take to Light: Mythology, Sexuality and the Origins of Culture, London: Rider/Hutchinson & Co., page 220

But the Ba, I remembered, could be seen as the mistress of your heart and might or might not decide to speak to you, just as the heart cannot always forgive.

1983, Norman Mailer, Ancient Evenings

The townsmen played ba often and clearly knew what they were doing.

2011, Alistair Moffat, The Borders