1. (noun)Zen, Zen Buddhism school of Mahayana Buddhism asserting that enlightenment can come through meditation and intuition rather than faith; China and Japan Synonyms: battery-acid, window pane, acid, back breaker, superman, dose, dot, pane, loony toons
2. (noun)Zen, Zen Buddhism a Buddhist doctrine that enlightenment can be attained through direct intuitive insight Synonyms: battery-acid, window pane, acid, back breaker, superman, dose, dot, pane, loony toons