meditation:In Buddhism, Yoga, and other systems of religious or spiritual discipline: a practice of the mind (and body) aimed at achieving the eradication of rational or worldly mental activity.——Oxford English Dictionary

meditation: 1.the practice of emptying your mind of thoughts and feelings, in order to relax completely or for religious reasons.2. the act of thinking deeply and seriously about something.3.serious thoughts about a particular subject.——Longman Dictionary of Contemporary English  @en